Mine is, or was, a hybrid. It's nearly a hybrid now, being a .60 over 20r block (that was sold as a rebuilt 22r) and a 20r head, but the block I had previos ran stronger than any other 22r I've seen. Even friends who had toyotas thought it had some work done to it. I am still running the 4 speed though, so I'm working a little harder on take off.