I don't believe CJ Sisk has anything to do with Bill Christy or Bud Jones.
I believe CJ Sisk was Endy's mother.
When Endy sold out of TR King he started CJ Sisk and only sold in CA. After he opened PS in LV he kept CJ Sisk for CA sales. CJ Sisk trucks were always at PS up until a few years ago. I believe they quit using the name in 1994. One of the trucks was in the PS wharehouse on Industrial when B&G took over if I remember right.