Renfro, sounds like you've made up your mind, but I'm going to toss one article out for you, just to put some numbers on things. Scott Sehr builds engines that are strong, innovative and that power several record holders. He builds for circle track, Bonneville, drags and even pro tractor pulls as well as street engines. I had him do an engine for me a few years back, and I came to respect him. Scott does an article monthly, "The Extra Mile", which is published in some of the auto mags. This is one from 2016 that might help you make an informed decision, considering the modifications to your engine - http://www.sehrpower.com/pdf/july_20..._talk_zddp.pdf

Good luck with your 454!