What we researched for this specific generation: where an enclosure actually fits, what the factory speakers are, how the factory audio is wired, and which real builds and commercial products exist for it. Confidence badges say how well each figure is sourced — this is research, not manufacturer spec.
Body styles covered: Notchback (2-Door Coupe), Hatchback (3-Door), Convertible (1983+)
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | trunk |
|---|---|
| Outer bounding box | Not independently measured — named commercial product below (7" mounting depth, 2 chambers) is the best available reference point. Vehicle-specific enclosure catalogues; published box footprints are lower bounds on the cavity, not the cavity: Ground Shaker 'BLACK 10" DUAL SEALED SUB BOX, FITS 82-04 FORD MUSTANG COUPE': Front Height 11 3/4", Rear Height 8 1/2", Length 37 1/4", Top Depth 17", Bottom Depth 19 1/2" (labelled by Ground Shaker), 2.84 FT3 total; 1.42 FT3 per subwoofer [only 1982-1986]; Ground Shaker 'BLACK 10" DUAL SEALED SUB BOX, FITS 82-04 FORD MUSTANG COUPE': Height 7 1/4", Front Length 42 1/4", Rear Length 36 1/4", Depth 15 1/2" (labelled by Ground Shaker), 1.68 FT3 total; 0.84 FT3 per subwoofer [only 1982-1986]. |
| Known obstructions | None specifically documented |
| Usable volume estimate | 2 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" or 1x12" sealed, single chamber of the dual-chamber commercial enclosure |
|---|---|
| Box type | sealed |
| Location | trunk (notchback) or cargo area (hatchback) |
| Subwoofers | 2x12" sealed, 1 ft3/chamber (named product above) — or 1x15" using both chambers combined |
|---|---|
| Box type | sealed, dual-chamber |
| Location | trunk (notchback) or cargo area (hatchback) |
Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.
| Factory speaker size | Real disagreement across sources, recorded rather than resolved: the most specific and repeated figure across multiple forum threads is 5.25" factory stock. A minority of sources say 6x8" — that figure more consistently describes the REAR deck (see other speaker locations), so it may be a mix-up rather than a real door variant, but wasn't disproven outright. NOTE: base (non-Premium-Sound) cars may not have door speakers at all — see factory amp premium audio. |
|---|---|
| Known obstructions | Consistent caution: doors have limited depth behind the panel — large-magnet aftermarket drivers may not clear without checking first. |
| Adapter bracket needed | unconfirmed, likely yes for anything beyond 6.5" |
| Factory speaker size | n/a — 2-door body styles only, no rear doors on any variant of this generation |
|---|---|
| Known obstructions | No rear doors on this platform |
| Adapter bracket needed | n/a |
| Factory amp / premium audio | Real, and a genuinely different structure from the base system, not just louder. Base cars: 4 speakers (dash pair + rear deck pair), no amplifier. 'Premium Sound' option package: steps up to 6 speakers by ADDING the front doors, plus a real factory amplifier — identifiable by a physical 'amp switch' on the dash next to the radio, a checkable marker rather than needing to decode a build sheet. No evidence found of JBL or any other named partner brand on this system; it appears to be an unbadged Ford-only 'Premium Sound' package, distinct from the badged Premium Sound/JBL systems our newer Ford pages carry. Amplifier location: behind the radio, not trunk-mounted. Bypassing it for an aftermarket head unit is a well-documented, common procedure per multiple forum sources — not a rare or risky swap. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward on notchback/hatchback trunk-area builds — doesn't touch the head unit or the Premium Sound amp if present. |
| Head unit | No replacement needed |
Real, but sources disagree on the exact figure: one puts closed trunk space around 14 ft3, another around 10 ft3. No independently measured W x H x D found.
Specific: 32.7 ft3 total cargo with the rear seats folded — this is whole-cargo-area capacity, not a sealed trunk volume. Like every hatchback, the cargo area shares airspace with the cabin, which is a real acoustic advantage for bass output rather than just a packaging one.
Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.
Each link opens the tool with this vehicle already selected.
Measure your own vehicle. Trim levels, factory subwoofer options, and mid-generation changes all move these numbers, and a box cut to a researched figure that does not match your truck is wasted wood. Where a badge reads Unconfirmed, treat the value as a starting point for your own measurement, not as an answer.