Thats kinna odd isnt it? why would you have a star drive CAS? I thought all the non-neo RB25 had half circle drive?
I have a HKS 256 exhaust cam P/N 2202-RN171 and it has a half circle drive and my CAS is also half circle drive. So doesnt this mean you need to look for R33 CAS?
btw, Im also looking for a CAS as mine is stuffed