where to get a 30-30 cam

[ggtsvnv]

I did a search for this and didn't turn up much so I'm hoping someone can answer. Where can I get a 30-30 cam for my 68 Z?  Do any of the aftermarket manufactures (crain, comp, et) make a dead on replacement? Or anyone with NOS cams? I have checked places such as Heartbeat City and others but as of yet have not turned up anything.
Thanks

[1968 Z28]

Comp Cams #12-107-3 cam only, #CL 12-107-3 for cam and lifters.
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=3&sb=2

[JohnZ]

Don't know offhand if the Comp cam is a dead-on duplicate or not, but the Federal-Mogul/Speed-Pro/Sealed Power cam is - their #CS-118R (cam only) or #KC-118R (cam and lifters). Also used to be available from GM as P/N 12364052 (manufactured by Crane) with lifters, and as the cam only from Crane as #967251.