Funny, this thread is 4 years old!

What I ended up doing was going to a Dana 60 with a Dr. Diff spool and axles. I couldn't be happier!

This car sees a lot of street miles and gets to the track probably 5-6 times during the Summer. Only issues are with tight parking spaces but I can live with that.

I'm now spraying a 200 shot on top of what I was doing and everything works great!

The only thing I will recommend is throwing the wheel studs that come with the Dr. Diff axles in the trash and replacing with something like Strange. They were bending.

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.