There would not be enough of a market for them to produce a batch of even 5. The housing to fit the cases would not be a big issue, and the cam is like a distributor cam no bigger than the end of your little finger, just need to change from 180 to 205 degrees. I checked the timing on the new Joe Hunt it was out by about 4 or 5 degrees split, so I had to modify the cam anyway to get it spot on. They are a good race mag but I wouldn't bother for street engine.