65mm is a good depth. compared to some larger ones [70mm-90mm]

you will just need a mdf spacer ring, that will increase your depth.

Also note the pro's are 6 3/4" so slightly larger.

the gear will be great, but correct installation is a must, and also sound deaden your doors, a must for quality gear, IMO there is not point in spending on good speakers if u don't deaden it with dynamat.