from what iv gathered from all i read replacement parts for 10 bolt eatons ho52/72 are next to non existent and costly. so if im going to up grade an 8 bolt drum system that has a cost as well just to be able to get replacement parts to fix why not make it 4 wheel disc. i own a 03 silverado that has 4 wheel disc and from previous vehicles that i used for towing with drums i like the the performance of the rear discs and i find smoother stopping all around. so if u can direct me in where to find replacement parts for an eaton ho52/72 drum brake assembly point me in that dirction and again it comes down to initial cost rear discs kit $540 and up and as far as rear drums and cylinders im am yet to find.but again it comes down to what i need to do to the existing brakes and availability of replacement parts
