According to this, from the FAQ (http://www.carstereoproducts.com/wir...n%20maxima.htm)

the front speakers are only 6 inch?

I thought both front and back were 6.5 inch?

I've also heard that front were 5.25?

Anyone have actual experience with these on a 5th gen Max? (stock stereo).

In 2 weeks, its payday, and time to get the aftermarket system in. Sure wish my 6 x 9's could be crammed in those doors....

 

You can go 6.5" in both front and back for 5th gen. It also depends on if you use the stock mounting bracket (bose bracket is decent) or making your own. I had to do the latter for my Perfects, 2 .5" wood rings cut out to add depth so not to hit the glass. Anyway, go with the more grande, it'll sound better