[dsmith]

The only thing I can tell you, and I can tell you this since I bought my cobra as a "used" car, is that 427-428 motors ad a premium to the vehicle. There were plenty of 289, 302, Rousch.... powered cars that were of the same quality build, but were substantially less money. Search the internet for cobras for sale and you will see what I mean.

In my humble opinion, big block FE is the only way to go.

smith