I want to put Infinity References in my front and back doors. will 6.5 in front and 5 1/4 fit in the back. help me out please

 

check the depth, but most likely the answer is yes. there is plenty of room in xa doors to put 6.5's in both the front and the rear. you'll most likely have to make some mounting brackets and you'll definately need to add an amp. btw, your best bet is to add a component system up front and some good 2 ways in the rear. you'll get the best sound that way for sure.