I pulled a set of truck 12-bolt 3.07/3.08 gears out of my truck to install 3.73 gears. I have a stock (rebuilt) TH350. The 3.73s made it a MUCH better tow vehicle (1000lb trailer, 3500lb car). But if I had an overdrive trans with a deep first gear already the 3.07/3.08 would be a good choice.
Now if anyone needs a set of 3.07/3.08 gears in good shape I'm sick of tripping over them in my shop.....
