I just wanted to take the time to thank all of you for your advice and time answering my questions. It's been a long road rebuilding my engine. Your advice absolutely was a big part of completing it. This motor (461) is a beast. I'm amazed at the performance and I still haven't tuned it with O2 sensors. I just took it for a 50 mile local trip and she wants to go lol. Thanks again to all that took the time to help