Cletis - thanks for unlocking the post! Sorry to make work for you...

Okay - question for everyone: How much differently does a 3600 drive from a 3100? The 3600 I'm interested in has a 3.90:1 rear end ratio. Will that get me 50mph on back roads? Other than a 235cid engine and 12v conversion, everything else is restored to original/stock including bias ply tires.

Thanks,
Marc