The only drawback to that rear end is that it's extremely heavy. We used them extensively on dirt track race cars back in the 1970's and 80's, and they had no problem handling 600 HP or so and 7K+ RPM on a rough surface like a rutted clay track. The only drawback was getting enough shock absorber action to keep all that unsprung weight under control. It's too bad we also scavenged up all the 4.10 gears we could find and wore them out in the process. A Muncie 4 speed transmission with a 1.88:1 second gear running against a 4.10 was just right for a "long quarter"- - - -a track that measured 1/4 mile around the infield. A "short quarter" that was measured around the outside wall needed a 4.56 to keep the RPM right.
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!