WELL The new tanks are all efi style, you need a pump assmy, intake, t/b, sensors, and a harness. Finding the intake, and t/b is easy I have several stock untis, the tank is about 250 for a aftermarket style looks VERY close to stock, + you have to paint that. Or find one on ebay last I look they where getting 3-4 hundred for a painted tank. Harness would be a aftermarket or HD item HD gets 350 for a harness. and you still need the ecm.. You might get lucky and find a wrecked bike that you could wheel and deal on. I have seen them get parted out and you would be in it for less than a grand for the parts you need. What is the reason you want to go efi?? I mean if the carb is working then use it, changing elevation and temps big fromone extreme to the other is where efi really shines.