The gears won't swap between those rear axles- - - -totally different bolt sizes, bearings, and bolt spacing. The only gear ratio upgrade available is a replacement gearset in 3.55:1 ratio that's sold by a couple of antique parts vendors.
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!