I'm gonna build the intake manifold outta mild steel. Not open for discussion. I can weld mild steel,..I cannot weld aluminum. The intake will require extensive fabrication,..and the bends I'll need are way too easy to source in mild steel. Finding Bosch style injector bungs in mild steel,..also not a problem. The problem comes in the fuel rail. What I really, really want are individual supply lines like mechanical injection uses,..but the only thing anybody has, looks like an aluminum, self contained piece for an individual Bosch injector that is tapped w/ 1/4 pipe threads on top. This would be perfect,..if it only was made out of steel. If I use some stock rail off of an inline six,. (like the one on a 300 six) I'll have to cut and splice the thing down to fit my shorter six,...which means that there'll be rubber hose sections clamped between each injector. The potential for leakage is obvious,..but I think I can maybe put a small single flare, or bubble at the end of each cut to retain the hose clamp so the sectioned rubber wont blow off from the pressure. I think I'm gonna use 60 lb/hr injectors though,..is a stock rail up to that kind of fuel supply capacity? I know I can buy a 6 cylinder length un-drilled aluminum fuel rail that can be custom drilled and shortened accordingly,..but the problem is where do you have that thing drilled, where the end result is a perfectly smooth rail that will not tear up the injector O-rings? My last "custom drilled" fuel rails done by my local machinist left a rough finish, that tore up the o rings,..and I cannot go back to him for that reason. I just don't want to have to have him do something he's not used to. If I don't do the cut and splice thing for the stock rail, sending the rail away for custom drilling, is my obvious next path. Who has done this? how much did it cost?