Rule book lawyer advice again, it says it has to be a stock carb or throttle body, so unless the originals came with epoxy on the exterior, it sounds shaky to me. I am sure the guy who's record you just beat will point out the epoxy too. As far as internal mods, I think that is wide open. If you can disguise a fuel injector to look like a carb without additional hoses, wires, pumps, or regulators, I can't see what is wrong. Again, before you start an expensive project, be sure to send a quick email to one of the rules guys, as their decision counts more than 100 opinions on the forum.