My Toploader comment. I had Kee build a new WR TL also. After three months I concluded that the 3.43 I had then and the 1:1 final was way too busy going down the road at 65 mph or more. Pulled it out and replaced with Tremec #4617 TKO 600 Road Race (.82 5th).
I had a near identical catastrophic stub axle failure to Duane's, due to a brain dead attempt a few years back to do a burn out on GY Billboards and hot asphalt
Had the Jag diff rebuilt by CWI with 3.31 ring, new spider cage, and billet 31 spline stubs - mas fino!!
Now I have cooked the stub axle seals due to the brake heat and ERA is preparing me a new rear assembly with outboard brakes (see Duane's photo above). Shoulda done it to begin with, but I had no idea then how I would be using the car on the track.
Car is 4 years old, 3rd engine, third tranny, third rear end iteration, and I am about to get it dialed in. It's all fun
BTW, I am up to the cost of a new Kirkham ...
Sam