I don't have much done just custom exaust, intake, stage II clutch, I had bought it with no engine so I found an engine with low miles(86000) and took it apart cleaned it replaced all the gaskets and pullies, then put it back together. Next stop is the turbo system from the mr2 that my boy jake will do for me, along with a custom intake manifold. And yes it is a 3sge first gen engine.