for my 95 dodge im looking to build a custom fiberglass box any ideas on how i would do that
HMMM or......... just use a square enclosures that it the right size as a mold. Glass the inside of it. and then glass around two of those and then your good to go. This way it will be a lot lighter, than having a MDF box inside of the fiberglass box. it will be a lot of work, and it will end up with a little more room, but it will be kick ass when its done, and a lot close to the amount of air the sub needs compared to just guessingUse measurements for the subs to make a box that you can fit inside the incloser and then fiberglass the hole thing.That way you can be sure the box is the rite size.