Ha ha, I was just saying that to tease one of the "sandcast snobs" here mate, but if I was serious, I could get them done here, my cuz is a vintage car nut and he's just bought a little French sports car from the 1920's, called a Voixon. (pronounced "Vwarson")
Anyway, he paid 20 grand just for a rolling chassis with front scuttle, but the guy who owns the only other one in Oz has loaned him the complete engine and transmission assembly so that he can get the 14 or so individual assemblies cast in aluminum, and he'll then have to fab a lot of the mechanicals too.
The hardest thing with casting parts is that if you want really good sharp castings (unlike my first RC block) all the "boxes" (moulds) have to be made from wood, and you have to "grow" them so that they are slightly larger than the actual item you are casting, to allow for shrinkage, as it cools. Once you've got your rough casts, you have to clean them up, machine the mating surfaces, drill and tap all the stud holes etc. Probably too much work for me, but it could be done. I think the sandcast guys are safe from some "sandcast sacrilege" for a little while longer.............