Just drop the rear axle cover plate and look for a series of numbers stamped on the perimeter of the ring gear. For instance, a 37-10 sequence would be a 3.70:1 ratio, 37 teeth on the ring gear, 10 on the pinion. a 41-10 would be a 4.10:1, etc. With the overdrive trans a rear end ratio between 3.30 and 3.70 would probably be ideal. The 292 has a lot of torque so a fairly high final drive ratio would be possible.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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