I'm getting set to swap out the dead 235 for a 350...in my 1950 3100 Chevy truck. I have access to all I need (junkyard), just have to get my info right. I know I will need a newer rear end. I'm looking to keep the original wheels on the truck (6 lug 16"). Trying to make a sleeper (looks original but modern guts). I want to cruise down the highway at about 10 over (80 mph). What rear end should I put back there? Oh yeah, I measured the original rear end at 56" inside to inside. Is that right. I want to make sure the new set up doesn't make my butt look too big HAHAHA