[Grey 65]

Vance,

Looks to me as if the 6 bolts holding the half shaft spacer backed out. When you install these everything (both diff flange female threads and the half shaft male threads) should be degreased and you should use thread locker and the torque bolts.

The broken part looks like the rear diff cover from the pic.... This is an easy part to replace. I am guessing half shaft came loose and since you were doing about 40mph the half shaft hit the diff cover ear with enough force to break it...

Yes, these are used parts and things break (I broke the R/H halfshaft at the Scottsdale, AZ Goodguys Autocross event in March). But unless you are on drag slicks / R Compound Tires / or just dropping the clutch at high RPM's things shouldn't be breaking.

Also, I'm over in Haslet... maybe 15 miles from you.... Now that Jay Nordstrom is no longer with us I guess I am the local BDR expert....

Pic is from Raleigh, NC Goodguys Autocross event two weeks ago.

Kevin.....