I bought the wife's car with a sub under the front seat. It was decent, but stole like 3" of headroom so I took it out. I upgraded the head unit in the my other car, still on stock speakers but it sounds good.
Hey Dave. I've been APR stage 1 for over 2 years and now at 110k. My clutch slips sometimes but I have mostly adjusted my driving style so it doesn't happen. It still pulls hard in the lower gears and I haul kids and other stuff around. I have bought a clutchmasters kit but haven't installed it yet. I would probably buy the Sachs SMF kit if I had more money.