[Cal Metal]

Aussie Mike:

It is a '64-'65 box; M-20 Wide Ratio with a 2.56 first ( 1.91 second, 1.48 3rd, 1.00 4th). The input should have NO RING groove around the outside. The spline count should be 10. Tooth count on the input should be 24. If it is 26 it is a close ratio. Also, if you are looking for a M-22, go to the Gearzone and get all new gearing. It is very low cost compared to what these guys want for used boxes which are normally beat to heck and have no residual value.

Dominik:

Didn't mean to sound critical of the Muncie. Have replaced too many gears in all these, including the TL, from out and out drag racing, to feel that any of them hold up well under those conditions for any length of time.