awesome. So with the Alpine head unit, I need to get the metra wiring harness and a dash kit t so itll all fit nice and snug and connect without any cutting. I think it will fit even without getting a dash kit, so i may try while waiting on shipping of one.
And to connect the factory subs (from 02 wrx) to my stock 07 WRX TR amp, all I need is the wiring harnesses from those stock subs (which the guy is selling with the subs).
Sounds pretty easy.