i own a 1977 firebird and it has a very small trunk. its not even on the bottom but the deepest point is only 13". i've found some rockrord fosgate subs that i like (punch hx2) and i can't decide to get the 10 or 12. 10 would fit better and need less cubic feet in a box, but the 12 would probably hit harder. i was woundering if angled them (say 45 degrees) and buy a custom box thats longer make the 12's soound good and fit.
also, is there thast much spl differancebetween the 10 an 12.