I just can't get this thing running right. Starts great and seems to run well but doesn't have much power. I rebuilt the carb first and got her running. Someone before me hacked the military spark plug wires to splice civy wires and plugs. I did the best I could to rewire it but I think the distributor, wiring, and coil are suspect. I just don't know if I want to spend any more time or money on this engine. I adjusted the valves and compression is great but I think this engine will need someone more familiar to get her running right.

From what I read the SBC is the easiest swap. Is that correct? What are the pitfalls that I should consider before embarking on the swap?