For what it is worth about his advising;
Hardcore aka Bill Mitchel was building and designing engines with Joel Rosen & Motion Performance, way back when I was only wishing I had one of them. His 454 engines were winning races before I ever built my first one.
So I do look at his advice with much admiration. I may not be in agreement with everything that he and Joe Sherman say, but you can bet your bottom booties that I have admired and respected them both for many many years and I do even now pay attention when the either of them speak.