If you want to do a V8 swap and money is a big issue go with the 5.0L. The 4.6 is a kickass swap but it is considerably more money to do. I'm talking from experience! The 4.6 is awsome and I wouldn't change a thing but it was more money than a 5.0 swap and very time consuming, but well woth it in the end!
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Life moves pretty fast. If you don't stop and look around once in awhile, you could miss it.
-- Ferris Bueller --