There has recently been a few threads on buying cams for the RB motors. Just saw that TOPHATPERFORMANCE.com now supplies Kelford Cams made for the RB20/25/26 motors. Not sure if this is news or not.
Personally I've never heard of Kelford Cams and I can't really find much info on them, but the cam specs seem to be pretty well though out when compared to HKS or Tomei specs.
http://www.tophatperformance.com/ under Kelford cams about mid way down the page they have a section for RB20/25 and RB26. Prices seem fair and it would seem the wait to get these wouldn't be as long as it would be for Tomei or HKS units.
And on a side note, does anyone have any difinitive info on max lift for stock springs for each motor? Thanks
Luke