833 B to 833OD

66fs
So hang a GV on the back, and run 3.91s.Shazzam. And if you find a 3.09/direct4th gearset. Double Shazzam!!
And if you leave the GV computer in the box and hardwire that beast, through a reverse interlock relay, that GV shifts like lightning. You will not find the tell-tales in the blackies. It will bark the tires at 70plus. Ok, my S barks em at 70plus.