CT26 will do good, they are commonly transplanted onto the second gen Celica Supras (I used to have a CT26'ed '85 model) and they do just as well there as they do on the Supras they were desinged for. Mine started spooling around 3k and was really hitting by 4. I kept the internal wastegate though, and it was very reliable running 8psi (stock boost) as a dd.