Dltalfa,
On my '42 I have had my truck up on a friend's lift a couple times to work on the tranny. As rickmg said it was easier to undo the u bolts and walk the rear axle back a few inches to remove the u joint. I didn't have to unhook the brake line to the rear wheels but took it to as far as I could. You may not need to unhook and bleed the system. Regardless, good luck with your project.
Kent
