OK... Mustang Custom Box = ?

[fr0zenfear]

Alright what do you guys think the best custom box for an 01 mustang would be for 1 eclipse 12, DVC 87121.4 (600w) max powered by the eclipse PA4212 amp. Also, the spare tire has to stay acessible.

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[Gauntlet 5,000+ posts]

If you want a custom box in terms of fiberglass, you could build a false floor. Basically you cut a piece of MDF to fit on top of the spare tire, and then use that as the base for the box. Fiberglass from the base along the contours of the wheel well and up to the trunk floor. Build a mounting ring and mount it to the middle of the base (or whereever you want it) with some wooden dowels, and then fiberglass from the mounting out to the edges of where the base meets the trunk floor. Make sure it's air tight and you're good to go.