P-30 front end parts

I wish I found the Rockauto web site sooner they did have the correct parts. The Moog parts were about 3 times the cost of the Rockauto ball joints. Anyone following this with a P-30 chassis it is important to note there is a big difference between a P-30 with drum brakes and a P-30 with disc brakes when ordering parts. From my research it is a lot easier to find these parts for the P-30's with drum brakes. They have a category that even calls out HD for the drum part numbers which could be confusing. The Workhorse center did not carry these parts any longer as well as the Chevy OEM's, Henderson carries some parts and had 2 reworked control arms but no knuckles. I have done most of the work on this RV myself except for the chassis work thinking the front end shops know more about this stuff than me, but after two front end failures due to wrong parts installed, make sure they install the right part numbers I hate to see a fellow member have to go through the same thing or worst have the MH go over the side of a mountainous road when one of the front end parts fails.