I have a 72 that the P.O. did the 79 mini truck disc brake conversion on. When I took it in to get the allignment done after replacing my TRE'S the guy said he could grab the drivers side wheel on the top and bottom and move it back and forth pretty bad so I should look at replacing whatever is worn in the knuckle. My question is do you replace the knuckle when you do the disc upgrade and if so what do I need to get to do a knuckle rebuild on her? Are there things that wear out more often on these things? Any ideas on where I can get parts for this or a rebuild kit would be great. Thanks