Thanks for the information. I'll look into Commercial Speedometer. I was hoping it would be an east fix to just change the driven gear, but after more research on Stovebolt, it looks like I would need to change both drive and driven gear.
The old Powerglide and later the TH400 I had in my old '63 C10 was just change the driven gear to correct the speedometer. I don't really want to tear out the drive line again, so I'll see what Commercial Speedometer can do for me. At least research it online for now, figure out what kind of price range I'm looking at. I can work it into the budget then.
