Ztuner.com
or call
941-539-3004 for Derek at Advanced Racing Technology. He has great prices and I would trust him over ANYONE with my car. He has built twin turbo vipers, drives a 600hp slicktop 300zx and his wife drives a 600whp single turbo rx-7. This guy knows his shit, LOVES 300zx's and will go out of his way to make things right. He provides fair prices (where Z Fever doesnt) and is definitely reputable. Harry was paid like 30k dollars to build a track car from some doctor out in California about a year ago. These guys KNOW their shit regarding Z's. It's worth the drive to Sarasota.