I originally had a similar setup with Mikunis on a Smallport, had a couple of issues with linkages and so forth, ended up changing to Silvertop 20V throttle bodies ran by an Adaptronic ECU(easy to tune, can make changes later on, etc.). This would have to be the best decision I made (changing back to EFI). I don't have much experience with Webers though. I'm guessing you don't have any of the parts to convert it back to EFI, you could do a cut and shut intake but the ECU itself will be the most expensive. Overall I think you'll be spending roughly the same either way but I'd always recommend EFI based off my experiences.