Strut rod bushings for 1972 A-body

In the process of rebuilding the front end of my dart. I got the new Moog strut rod bushings from rockauto. They are different than the factory one for sure. The original one i removed was a one piece design and this moog new one is a 2 piece design where the washers dish 'out' instead of cupping around the bushing. I have read a few posts that this is a new improved design but also read that the rubber is crumbling away in a short period of time and causing clunk when braking. Before i use these things, im wanting any and all feedback from anyone using these because if they are not lasting, i sure dont want to install them just to end up re-doing it in a short period.. The also have the one piece desig from delco available so if these moogs are for sure a problem, i need to know so i can get the other ones. Any info is greatly appreciated!
Thanks