lookin to upgrade wondering how well these perform on a stock 300zx tt ? anyone got these turbos or know how well they perform ?

 

I had 530bb's on my stock 350Z for two years. Different car, but I can tell you they performed very nicely. Lag was minimal and they felt really strong up top. Only reason I changed was to upgrade to 700's. Hope this helps.

BTW: I have a pair for sale if you decide you want to buy a set.

 

Sport 500s are a fantastic inexpensive upgrade. Spool like stock and have great power output for the cost. Keep in mind, though, any aftermarket turbo is going to require basic upgrades to work efficiently (intake, cat-back, downpipes, and ECU at least, intercoolers and injectors if you know what's good for you).