working on a 65 chevy 3/4 long box truck with a 235 and 4 sp trans. In the process of a frame off restoration and will be working on the chassis after the cab is off and wondering what is the best way to make the truck drive down the road better at todays speeds. The main concern is the possibilty of swapping rearends but don't like the fact of two different bolt patterns. Would it be more cost effective of swapping transmissions for a S-10 T5. The frame that I have now is in very good condition and I don't mind the front drum brakes.