Not sure where you are located but I would think someone like Vic Hubbard should be able to do or know of another shop thatcould handle the job. Been a while but there were a number of reginders in my general area, have you checked with any of the local engine rebuilders? Regrind shops are becoming less popular with the abundance of camshaft companies
I seem to remember in the PAW catalog one of the companies manufactures original blueprint cams of the muscle car era, I don't have the catalog on hand but if you search through the web site of the better known manufacturers you should find them, gotta be Crane, Comp, Crower, Isky, Lunatti or one of them guys..
69 Sportsroof, 351C, 4spd toploader, Restomod BOSS 429 clone - the one and only (?) 1969 BOSS 351