OK my friend who has a machine shop is strugling he cannot get the castings for a big company he deals with due to China supply issues. I mentioned to him there is a market doing older car parts, simple stuff. Any ideas what is needed alot and not available easily? I am having him make up some RB to B distributor adapters for me. Any ideas? he is not a automotve shop. Dam place is 320' x 220" built in the 1850's and did mostly cannons and guns for almost all the wars and has CNC machines also. I told him to do a Tour every other week the place is amazing to see.