I plan on replacing the rear cv's soon and the uni's. I've put promax after market's cv's on the front $100 brand new from supercheap auto and tbh they are built alot better than oem and the same price as reco'd, looking through the spec sheet also have better operating angles for lifted cars than the oem spec (which in my expirience just means they've been prepared to write down a bigger number than subaru).
But reading through your thread thunder it seems like almost the same problem, knocking noise under throttle and load clutch in on the flat noise gone. I've get to get around the replacing the sway bar links but as their cheap anyway I'll probably do so.
I've also been drawning up some plans for a 2" lift and 1" body spacers and plan on taking out the HD kings and selling them, but im not sure whether to change the cv's now or after I lift it more, which the rear cv's they will last longer if they settle into a height and angle than if changing it later on.
on another note I've been wondering if front strut camber bolts would fit on the rear of the forester as well, I dont see why not and being probably free at the wreckers might not be a bad idea, as they would be stronger than aftermarket ones. But i dont know if the rear hubs are shaped for camber bolts to begin with