Jbevs
Member
Go with 4:10s for 35s. I am not sure why you would need to go to scrap yards because you can get new ring/pinion for 410s from Ford, SVL, or Motive Gear. You can also get LSs, TruTracs (for the rear), and lockers. Either way, good luck and let us know how it goes.
Based on finding axles in the scrap yard, I was assuming he was taking the whole axle so he didn't have to set up gears.