[Tek-Fox]

I've redone the whole system in my 06 TR.

Installation was a pain, but not horrible. None of the adapters that crutchfield sent me worked, and there was no bracket to mount the tweeter to so its not just a drop in replacement, at least not for those speakers. Thankfully I've got a friend at an audio shop that whipped something up for me quick and was able to get em in there for cheap.

Fronts: Infinity Reference 6020cs 6-1/2" component speaker system For 6-1/2" and 6-3/4" openings at Crutchfield.com

Rears: Infinity Kappa 52.9i 5-1/4" 2-way car speakers at Crutchfield Signature

I've got those amped off a pdx5 and it sounds pretty good. Not the highest end thing out there, but it is worlds better than the stock setup.