Thanks for the link Chris! After lookin at this, may/will have to reconsider my old-school ideas/views. A nice plus to using these, eliminate 6 grease fittings -- I consider that a nice feature and the price is vry reasonable compared to other AM suspension setups....
I intend to get a set of these soon after the new year as I will be doing a disc brake conversion as well. If I have to change the spindles, might as well change the upper arms at the same time.