74 Scamp gen 3 swap help

Thank you, I appreciate the input. I know it will not be a easy swap. But I'm committed to doing it. I have pretty good connections to a dealership so getting whatever engine I want should be a breeze. I'm more worried about fitting it in there. I'm under the understanding that the 727 will bolt straight to a 5.7 with nothing more than a flex plate. Am I wrong? Also I have seen plenty of companies put out the necessary wiring and computers for the swap. But who is the best for reliability? For now I want a stock 5.7 that will get me from A-B. Once it does that then I will start with the upgrades.