I have heard of them. Lots of shops use Yukon gears to keep cost down on rear ends. Not a bad gear for a driver. Unless, you are going to be putting down some power, they're not a bad brand gears.
A pretty good case, the retaining lugs[for the side bearings] are better located to help in preventing cracking of the cap but then they made the cap with a step.Why? You will need to run that style of front pinion support,I don't think the standard pinion support will work.and think about what gear ratio you will running being aluim they had to add material and you may get interference with some of the bigger ratios.Stan