The Stovebolt Site Forums The Shop Area Engine Shop Improving Driving Speed?? Maybe to 65MPH?

Hello All, My Name is Danny I'm new here. I have just purchased a 1960 Chevy C10 Stepside with a 235 and a four on floor. I got this truck becuase my dad had one when I was a kid and well It's a sharp lookin' truck i think....Introductions aside my question is what kinda relatively inexpensive things could I do to increase top speed? ( I want around 60-70mph) I was thinking a new rear end, but what kind and from what vehicle can I use that would require the least amount of modification. Also I've been trying to identify my head casting number. any clues... #3836848 thanks all!