Doh! You've caught me overthinking that!
Obviously in the case of the bare tank listed and your bare Carbon tank, you would be sourcing new parts anyway. So it's a (relatively) simple process of sourcing the whole SS carbie system. Pump, regulator and fuel rail. The later is just a rubber hose that connects to double spigot banjos on the carbs and forms a continuous loop to and from the tank with the carbs in series as it were. On the ie models the regulator is also in series on the rail with the injectors. I couldn't say about the SS carbie or even, as you suggest, that there is a regulator.
Hopefully your carbon tank has the appropriate clips inside for the pump and filter, more hopefully the SS type pump is the same physical size as the injector one and will fit the clip.
You will also need a fuel level sender, whether functional or not, as the cables that power the pump are part of that assembly, and the hole needs filling anyway.
The filler is another issue as it's a different (larger) size to the carb version, so you'll need the larger mounting ring, but not sure if the actual filler cap is interchangeable, so you can keep the same key. Maybe it's possible to just swap the barrel over?
Can't wait to see it on your bike...
