[Al G]

I don't mind tinkering because I choose to. I'm more concerned about down time caused by a failure or because my tinkering screwed it up. I agree these engines ran many trouble free miles as daily drivers in the 60s, and thats what had me wondering about the rash of problems I've been reading about. Certainly those 60s engines might have been a little milder, but they also had 60s quality parts. I would hope a well built modern engine could deliver lots of trouble free miles with the proper care. I'm getting a new Shelby engine, not one with a 40 year old block.

Thanks for the comments.