514 Engine

The swap shouldn't be too bad. The only problem I would foresee is having headers that fit - especially if they are big tube primaries.

A 4.6 is wider/taller than a 460 is. They (the 4.6 motor) fit with an ample amount of room to work, so I don't see how a 460 would be more of a PITA to work on.

Joe