Oh wow, $600 sounds like a steal! I know it's often not necessary and sometimes a waste of some money but I only like to buy brand new parts. However, an axle for $600 is something I would humor for sure. I usually wait for something to break before I upgrade. But the axles are something I'll probably upgrade before they break. I'll do the front and rear at the same time, D44 with the 4.10 gears. If I don't break them sooner I'll probably swap them next year. Then I'll only have the trans to worry about haha.Thanks for that, I posted over on youtube too, what a nice job on that as well.
Might check around the site, there's been a few D44s from sports pop up now and then, there's one in Texas in the classifieds for $600 FWIW.