In need of L28ET OEM engine parts suppliers

Hi Gang,

I’m having a bit of a problem finding supplier’s for three certain parts: OEM P30 crankshaft, OEM “M” Cam, and OEM hydraulic lifters.

I’ve been searching on the web for days and in all the Z-car forums and either I’m missing something or I'm completely blind.

I’m currently rebuilding an 82 L28ET that I’m trying to keep as stock as possible. The block is the F54, the head is a P90a with the hydraulic lifters, and the crank has "P30" stamped on it, and the cam has "M" stamped on the end.

I’m open to sourcing parts from aftermarket vendors as long as the reliability & quality is the same or as close to possible as OEM.

Open to all suggestions, thanks….