i have yet to check the dimensions and what kind of space is available back there. we sell the snot out of the infinity basslink t's, but i don't know how much "bump" you're looking for.
specs:
http://infinitysystems.com/caraudio/...t.aspx?ProdId='BASSLINK+T'&Ser=BSL&Cat=PSU
subs and amp all-in-one. you should find one in your area for around $500. if not, pm me.