Hello - found some new Infinite Kappa 50cs 5 1/4" components - a couple of questions:

This is the mounting dimensions from their web site - do you foresee any intall issues for my 03 WRX:

Mounting Depth 4.5"
TWEETER - 2-1/8"
TWEETER - WITH GRILLE 2-1/16

Also, I understand these are 7-8 year old speakers - is there any issues buying older, stored speakers ( all original in the box). Is rot and issue.

How does $75 sound for these speakers?

Thanks for helping