might be cost restrictive to have these poured overseas, we had a decent foundry where i live in Toowoomba, was the life blood of this city and a big employer, they are now gone, they amongst other things did racer pro heads for chev there. Do you have a machine which automatically gets a 3d image of a part then replicate the same part in bulk with either a cnc machine or water cutter? The guy i got a quote from here wants 12,000 grand to do a manifold, that is from start to completion with drawings and concept through to making the moulds, and getting me one manifold to test, i thought thats not to bad, but he mentioned a RRP of 3295 for a manifold with throttle bodies and i need to do 10 at a time, not sure of my actual cost. I was doing the same thing with converting XF falcon crossflow distributors to log motor ones and selling a kit with box, coil etc, local company does the kits and conversion. Its all money and not something i want to become rich from, justa hobby business that will pay for my car and motors.