there are so many companies out there now that make parts for the 44, i have no problem running it. The only real weak point is the axle tubes, which can be fixed with a truss, and the shafts themselves. Upgrade to RCV axles and never break another u-joint or shaft. Spindles can be upgraded to 3/4 ton, and hubs replaced with drive flanges. Granted, building the axle up like that is going to run around 2 grand, but it will be just as strong as a built 60, and you wont have to worry about the ginormous differential housing that the 60's have.