does anybody have any ideas on a custom subwoofer installment on a g body cutlass? id like to conceal it as much as possible but still have a heart rattling subwoofer in back

what kind of ideas are you looking for? If you just want some ideas then try checking out some magazines and see what others are doing so you can get some visual ideas.

i wanna hide it as much as possible, i dont know though.
might put a L7 10 solo baric up on the ledge in the trunk, build a box across that then angle it up in the back, put the sub right in the middle

Check out www.sounddomain.com or www.cardomain.com for some great ideas. Mainly ricers on there, but some nice system setups.