Quote:

I'm glad I'm reading this now because I was considering upgrading my 4sp 71 RR to a 5 speed, but I need to shift up to at least 6500.

I'm no transmission expert. If the aftermarket trans needs a million alignment modifications, then forget it.

What other manual O/D options are out there? Money is no object.

Jim



If you really need the o/d, you could bolt a gear vendors to your 4sp.