What is the SMALLEST GM engine I can mate up to a 465? My little Suzuki doesn't even have enough power to get out of it's own way, so I'm wanting to solve that little problem. I know a 4.3 would work since it's 350 minus two cylinders, but I was hoping there was something smaller than that that would work. What I'm shooting for is something that can handle some higher RPM's (roughly 5-7K without blowing apart). Or unless there was a GM 4 or 5 speed offered in the S-series trucks that had a good and low first gear, that would be great also.