early 50's GMC coming in ... 4.88 under/3.42 over
Coilover what transmission do you plan to use behind the 500?
I'm using a TH400 (no overdrive) and 3.42 gears in my 1-ton trailer puller. With 31 inch tall tires I expect it to work out about right, but would be curious what you think.
Since mine will rarely be on the highway unless towing I don't feel the cost of an overdrive is justified in my case.