Well if you want to see mine since your in socal your welcome. Yet I don't see any of the prone problems you mention. Currently have 164k on the case and 64k on the ppg gears. I have been through the stock set and two sets of ra's before these. Also have ppg selector forks and obx front diff. You can say I drive pretty hard. Power is only 240 whp. Recently switched to a snout repair kit as well.
I think you have a good idea but still need more work. As well as something more visually pleasing to look at not just functional.