I gave them a call but they didn't have any cores, I recycled mine years back. I'm assuming I'd need a cam from a roller LA. I'll be keeping my eye out for some. My local pick and pull has a bunch of magnum engines. Oldest being 1998. 1998 seems like it was yesterday.
You could use a Magnum cam and add the snout extension and fuel pump eccentric available from Hughes Engines (Mancini Racing might have them too). Or run an electric fuel pump.