I can supply a rebuilt set of 40mm Solexes, which are the standard on 2T-Gs and 18R-Gs if you can afford two weeks wait while I do the work. $400 exchange.
I can also supply a set of 44mm Mikuni/Solex just recently rebuilt and dyno tuned/balanced/jetted on a 3T. $660 posted to you.
I guarantee to support both sets, with help for jetting and any initial installation/setup/running problems.
I can also do a cable throttle kit for $120 if you need.