'70 Duster Revival: Drag Racing Heart | Pro Touring Soul

When I purchased the car there was a 8 1/4 Sure-Grip in the rear with 3.91 gears. During the build I picked up a '73 Duster parts car with an 8 3/4 (742 case with 3.23 gears needing to be rebuilt) That was going to be the rearend of choice... until another Mopars in the Park swap meet came along. I was able to trade the 8 3/4 for a Dana 60. The end goal was always to have a rearend that could handle the current power output and also any future upgrades.

The Dana 60 was a completely rebuilt with 3.73 gears, aftermarket axles and a Right Stuff Detailing disc brake conversion kit. An RMS Street Lynx triangulated 4 link was to be used so the mounting tabs for the top bars needed to be welded to the top of the housing. Being as the Dana 60 came from a truck, the the axle tubes were 3 1/8" compared to the standard 3". This created a little bit of an issue when trying to find u bolts since the ones that came with the RMS kit wouldn't fit. (Most available u bolts for the truck Dana's were too long and the threads wouldn't go up to the mounting plates.) After a long search I was able to find the right u bolts stocked at NAPA.

I cleaned the case then primed and painted it chassis black. It was time to install the rearend and start the wheel/tire decision making process.

Rearend Cover
Moser Engineering Aluminum Differential Cover
PN# MOS7112
• Support-style cover that stiffens up the main cap area

Axle Yoke
Mancini Racing Axle Yoke
PN# MREEY1350-6075
• Forged
• 29 Spline

Rear Disc Brake Conversion Kit
Right Stuff Detailing
PN# RSD-MDCRD01
• Green Bearings