FoxxyFiveO

Mine was like $300

redpony88

+1 to do it yourself i did mine in my 88, i even set it up to run subs so i more or less just deleted the weight of the seat and not the weight of my heavy stereo, i went with 3/4 plywood for better bass. then i went to this store we have around here but i'm sure you could get it at a stereo store i got the carpet used for making speaker boxes but i went with black

OneFine89Mustang

i know cjponyparts.com sells them not sure on the price though

SMKMUP

Thanks for the input, I think I found the kit I'm going to buy it's $105.00 and should be sufficient for what I need...I have to trim around my stupid roll bar though...

fordboyyfm

look on racingjunk.com i talked to a guy about making me one out of aluminum. he has them for notches i think but he said he can do a hatch.
i ended up buying a rear bulkhead from wolfe race craft. i figured instead of making one ill spen ara bucksfew extra bucks for one that fits right in, nope had allot of triming to do, which i had to anyway for the cage but it was way to wide to fit like they said.