import builders is good shit...you could also look into JE, CP, Arias, Endyn...but remember, you must go with a forge rod also if you go with any of these. They all work on a "free floating" wrist pin setup and will not work with factory rods without major modification. Plus if you plan on boosting it down the road, you are going to be better off for reliability with a forged pisto/rod combo.
matt