Hello all, new to the group and I have read a lot of post about upgrading the carb to a Webber 40 with the CB intake. Where in the world can I find this intake used or new??

I picked up a barn find 06 with only 300 miles on it completely stock and well, it as all of you know is lacking in the power department. If the CB is not available what other carb options are there?

Thanks in advance