I just got my STI. I plan on putting in a eclipse CD player
(CD5433)
Front speakers are a set of 5 1/4" DEI stuido components
PPI PC275 amp for the front speakers
No rear speakers ( no need)
3 Jl audio 8w6 subs
Orion HCCA 225 for the subs.
I already have most of it so I am just using it over. The cd player will be new. But Its pretty good stuff. All of the stuff is pretty light weight considering.

 

I installed Boston Pro Series in the front, and Boston Rally's in the rear. I am powering them with a 650 watt Kenwood. For my bass, I have a Rockford Fosgate High Energy Punch 10", powered by a Rockford Fosgate Punch 250. This setup really bumps, even though its only a 10". For right now I am using the stock 6 disc Subaru deck, but next week I am installing my Kenwood Music Keg and a Kenwood KDC-X969 (it has (3) 5.0 volt RCA pre-outs, one of which is non-fading for the sub amp. Check out the custom enclosure I made, it'll do for now!

 

Believe it or not, rear sepereates is pretty badass. I've got alpine type r 5 1/4" 's front and rear and they sound awesome. Add to that an Alpine cda-9815, two JL 10w6v2's and an alpine MRD-450 amp and you've got my system which really cranks. I really recommend the seperates in the rear.