George, you're a hoot. You claim that what the AE team drivers are using is the best and none of them are using the RPM arms so they must be garbage. And yet, everyone of them has the gear diffs. So... ?

As for me, I have been running them for two weeks now and with some oil tuning I've got them where I like them. I need to go back and forth to really tell the difference but off the bat running them is no different than ball diffs except the peace of mind that I'll never blow up a rear ring gear again. There is definitely more punch available with the gear diffs but I like to tune it out with the slipper anyways, that's just my preference. The gear diffs combined with the aluminum chassis has not really made my car quicker but easier to drive more consistantly.