I am going to be running a muncie m20 4 speed with 2:52 1st gear and 1:1 4th gear. I will be running this in a 1966 chevy pickup with 275/40-17 tires. I want to beable to cruise with it and still have good pull. This is coming out of a chevy nova that has a built 355 and 390 gears and it just ran out of gear to fast and you couldnt cruise with it, it was always tacked up. I was planning on going with 342 gears or 308's. Anyone have any suggestions.