shouldn't be "real low geared", just the standard 3.90 .... 3.38 is the best you'll find for the original rear, but that'll give you a decent highway speed and still let the 235 get you rolling from a stop - if you want lower highway RPM yet, get an original style [55-70] OD 3 speed that'll bolt right in, but the 0.7:1 OD on top of a 3.55:1 rear might leave you wanting a stronger engine

and welcome to the garage Gene, lots of help around here
Bill