For speakers get the new Focal K2's... easily the best sounding car speaker I have ever heard. Pricey though, about $950 for the pair. Team them up with an Audison LRX amp (about $750) and you will have the best sounding system out of anyone you know, or your money back. If you want heavy base, then get a JL 12 W7... and another Audison. All of the above can be demoed, and purchased at your local Tweeter store.
By the end of the month, my system will be done - a pair of the K2's, Two Audison LXR amps ( the 1400/1 and the 2500/2) and my two, currently underpowered, JL 10W1's - I gots to keep it light son!)