The EFI exhast manifolds (cast iron dual headers) is actually a common swap. They're cheeper than tube headers & will rarely crack or wear out. May not quite flow as well as tube headers, but still pretty good. Far as I know the EFI exhasts will work with the stock intake, but you're better off to go with a cliffy or offy intake. This way you can use a 2 or 4 bbl carb, won't change your gas milage much (might even improve it a bit actually). The cliffy you might have to grind a little bit to get the 2 to fit together, but other than that you'll be fine. I'm currently running an offy, ford 2bbl & EFI exhast.
Edwin
