Danny,
The axle I used in my '46 is from a '58. Deal of the century, $75 and it was completely rebuilt with Toms axles, side gears, bearings, 3:38 gears and new brakes.
The newer axles are wider than the original in your truck but there is plenty of room in the fenders so no worries there. The brakes will also be different, you have Huck drums now and the newer axle will have Bendix drums. It won't matter to your hydraulics, but the parking brake will have to be modified. I used cables to match the new axle and did some adjusting on the cable hangers and moved the keeper for the cable adjusters on the pull rod forward a few inches. My parking brake handle is mounted to the transmission adapter plate with a flat bracket that I made in the shop. The spring perches are easy to obtain as they are the same size as Jeep parts. If you get a driveshaft from an S10 you'll just need to have the length changed and you're off to the races.
Steve
