i have infinity reference 652i (6 1/2") speakers?
do they fit?
anyone already install them?

 

yes its possible but do a search for more info

 

Preety much any 6 1\2 will fit in the door unless it has a really big magnet such as Boston Acountics Pro's or certain MB Quarts, and really even those wil fit they just require a little modification. I ended up returning the Boston Pro's for the rally series just because I didn't feel like messing with the door panel too much to make it fit, and I figured I could put the extra money to use in better places. Only thing with the 6 1/2 is that the factory screw holes or too close together so just drill the holes in the perimiter to make it fit, simple mod.