Funny coming back to this thread. My other "fun" car is a heavily modded saturn sky, pushing somewhere around 380-390 lb-ft of torque.

In a shocking twist (ha!) that torque sheared the bolts at the diff mounts. The relevant part...I learned that the driveshaft has an actual CV joint at the tailshaft of the transmission and a guibo on the other end like our mercs. Thats something I havent seen before, and apparently extremely sensitive to mm-level misalignment.

Learning very quickly that theres quite a few interesting variations to driveshafts that I had no idea about. Anyways carry on - good luck with the front diff work!

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth