2.71 or 2.94 gears for 9 1/4 rear.

I don't think 2.94's were ever produced. I've been watching for 2.71's for a few years. No luck yet. The later year C Bodies used them.
This is for a friend that's not a member here....and I've only worked on one 9 1/4 in my life so I don't know much about them. Thanks.