Bonneville Landspeed Racing - Let's Try a Thing.

TT5.9mag said
I think I’d rather have the 2.50 gear and a 3 speed than a 3.23 and an OD 4 speed. You likely won’t hook up for the first mile with the second combo so it won’t accelerate faster.

Gotcha. I can look at the QC closer as to what it needs. Both axles need brakes and such. The 8 3/4 has a known good center diff with 2.94 and spool.