Brendan:
It looks like you were correct.
The folks at Randy's said 3.90:1 was the highest [lower numerically]R&P ratio available on the 3/4 ton. My big block 72 /12 ton originally had a 3.55 [or 3.56.1] R&P which we swapped out to a 3:73 to give me a little more off the line but not enough to buzz it to death on the interstate.
Have a great holiday weekend everybody.
