ther have been a few "comments" about the way World handles warranty claims.
my suggestion would be to either head to you local GM dealer and get one of the many fine crate engines available there, or find a good local builder and have an engine custom made for you.
you don't plan sincerity.
you have to make it up on the spot.
wanna hear about 20 years ago when i was too smart to know any better?
Check out the 502 from Sallee Chevy, I used it in my 68 Z and loved it, the guys at Sallee were more than helpful, and the 502 runs like a bat out of hell. GREAT engine out of the box. You can see the changeover at my site. www.camaromuscle.com