HMMMMM- - - - -big rim diameter, Band-Aid tires, and two overdrive ratios- - - - - -I'd suggest a rear end gear no higher than a 3.73, and a 3.90 or 4.11 would probably be better. Getting the final drive gear too high will result in only being able to use the OD on the Bonneville salt flats, or somewhere else where you've got miles to accelerate, no hills, and no speed limits.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!