@klhansen - Thanks for the link! That doc had some additional info that I hadn't seen before. Unfortunately, the tables don't match the numbers I pulled off the rear axle. I guess I'll have to dig some more. The original straight-six had been replaced with a 1988 GM V8 crate engine, so that's just another fork in the road. I'll be sure to check on the legality of data plate replacements, too (appreciate the heads-up).
