Relocating the rear differential 1.25” towards the rear of the vehicle on a 72 Dart

GTX JOHN said
All of ours make a loud clunking noise when shifting gears
especially 2 to 3.

We leave in a small town where everybody know us, so we
are only at full throttle at the Track.

We have Pro Trans reverse Valvebodies that shift hard, that
probably aggravates to clunking compared to a stock transmission.

I'm glad to hear this @GTX JOHN ! I've always thought the 2-3 shift CalTrac noise was just my car. I also have a RMVB but mine is a name you'll probably recall from the past: Griner. It's in my Cope 727 trans. Low band apply, etc, etc. It's a keeper for sure!!