+1 on lextreme. you have to piece everyhting together pretty much, nothing and i mean nothing is made for the 1uz really. but a couple company's in australia make the intake so you can put a positive displacement s/c on it, but turbo or a votrec type would be the cheapest/ best bet.

here are a couple sites i have found.

1uzquadcam.co.nz

1UZ-FE

Lexus-Toyota V8 Performance Parts - head studs, mls gaskets, shocks, lexus lcd, alternator

Lexus L-Tuned Parts, TRD Lexus, TOMs and UGO Performance Parts for GS300 GS400 GS430 IS300 LS400 in Southern California

LuxuryMods - The Only Stop For Lexus OEM & Aftermarket Performance Parts - 1st Gen SC300 SC400 92-00

Conversion Kits

Bullet Cars - Supercharger Kits Toyota 1UZFE