Looking for a little guidance on a build for a customer. Car is a 1970 340 Dart. Factory intake manifold. I'm stroking the 340 to a 416 with factory iron heads and a mild cam. Question I have is using the factory intake (because the customer wants the appearance to be as factory as possible, so that's why the factory intake) what suggestions does anyone have regarding the carburetor. It appears that the factory carburetor would have been a Carter 4935S, however I think finding one may be like hens teeth.

Thanks
Darren