Hi new here. looking to find info on the tranny and rearend that someone has put in my 52 GMC. the numbers on the tranny are con5 then under that 10J231 under that GM under that 591907. It is behind a '58 235. They have changed the rearend trying to figure the gear ratio by turning the wheel the driveline turns 3 7/8 with to full turns of the rear wheel.

thank you. :confused: