My guess would be along with the usual mods (that it takes to run 12 flat) and the right tires and LSD, all you really need is the right gear ratio.
3.91's. 4.10's, or maybe even 4.56's (with a tall enough tire).
It's just too bad SOMEBODY (like Woody) couldn't come up with a 9" to solve all the problems.
Or maybe this is the easiest way to go:

http://www.south40streetrods.com/Rod...ickchange.html