i also have a 65 chevy c10 with 230 I-6 and 3 speed on the column (got it for $50 with blown motor has a real nice patina look) i've heard of the non-syncro trannys and was told that you kinda have to double clutch so what do you mean by 1st gear is not syncroed that and like a SM420 4 speed out of a 55 2nd series 3/4 ton be syncroed?
Nate