Thank you guys for comming back to me with info. I never had much exposure to ford motors before. I always had small block chevys when I was younger and played around with engines. I do like looking at the fat motors though. I also have a 71 lincoln with the 365 horse factory 460 cid. Its really cool for a big car to get it done. It was the car that was on the T.V. show Jake and the Fat Man. It was sold at a universal studios auction and my uncle picked it up after that and I ended up with it. It has about 77,000 miles on it. It isn't show quality but it is very respectable. You guys have talked me into keeping the spare complete 391 that I picked up with the F600. I also have a spare 71 460 all complete for my lincoln. I like spare parts and my yard shows it.