Ummm...LS1....that's what the thread is about. Do you mean LS2/6 or newer? Any GenIII or GenIV SBC, but I just used the common term LS1. All aluminum would be preferable as well as older OBD2, cable throttle engines. A crate motor might be the way to go, too.
Some of the things to think about would be the wiring harness/throttle cable/clutch/tach/speedometer/power steering.
Might be illegal, too.