[Mark IV]

I have seen Mk IVs converted to FE power and unless ordered from Autokraft that way the swap requires a LOT of cutting/fabbing to work. I hate to see a MK IV chopped up in a way that precludes return to factory condition.

A stoker 302 (331/347, etc.) will be a quick and much easier swap but a stroked 351 will allow you to got to the magic "427" number and not require the footboxes to be chopped if you run an undercar exhaust. The extra height/width of the 351 works on the MK IV and several were powered that way (like Jack Roush's car, Mike Kranefuss's car and Bob Negstead's MK IV).

Negstead told me if he, Jack and Mike revved to 6000 and dropped the clutch together "we can change the Earth's rotation!"

Look at the MK IV lightweight that Alan Faulkner-Stevens changed over to a 351 stroker with a TKO600 gearbox featuered in the ACOC ACtion magazine in May of 2009.