[MARKDTN]

I have a friend who's father in law has a 65 C10 that his father bought new. He drives it every day. Engine has been built 2-3 times and the speedo hasn't worked since the 80s. It has a 250 (from a '68 Nova) and 3 on the tree. The transmission is about to die and the column shift is completely worn out.

What is the easiest 5 speed to put on the back of a stock 250? He does not care about the speedometer. Can you use an S10 4.3 5-speed?