ok so im wanting to upgrade from a 12 btl to a 15 btl..and my question is do i have enough room. i have this to work with......24 tall 42 wide 19 deep..thanks for the help

You've got about 9.2 Ft^3 before sub/driver/bracing displacement. Assuming you're using .75" MDF. But i dont see why that wouldn't be enough.

K if I have that much would it be possible to through a 18 in

K if I have that much would it be possible to through a 18 in

You sure do If its in a JeepLiberty It'll sound nice and loud. the btl 18 only needs a 5 cubic foot box i think, maybe 6. Thats after woofer displacement and port though

K if I have that much would it be possible to through a 18 in

Yuppp

Sweet now I just going to need a builder im going to try my local shop but there expensive and it prob be better to get argent again cause he does awesome work