Great looking car you've got there, Andy.
We also are leaving our sheet-aluminum items unpainted but the tank will be black (textured).
Am wondering how you did the routing of the coolant lines for your supercharger. My plans had included using the fitting with the filler cap (i.e., the fitting from the donor) in its stock location (i.e., attached to the sc snout) but am now realizing, after looking at one of your pics, that there's insufficient room for that.