I just found these on the
http://skyhawkcanada.com/catalogue.html page, about halfway down; they sell Grubee parts. It says a new carb is $40, but remember they are in Canada, so I'm sure that 1) that's in Canadian $$, so currently that's about $34.12 USD, and 2) shipping may be way expensive. I sent an email off to the guys there to see what it might cost to get one to me. If it's anywhere near the $75 Mike is charging for his, I will probably buy one from him.
[Mike says this is what the description is for his, and I think it's the same Grubee part as the Canadian guys, except for a few extras: NEW big carborator kits (remote choke model): new style throttle, remote choke lever and cable, K&N style Aircleaner, studs, and second motormount block - $75.00]
I love the idea of a remote choke to go on the handlebars! I've about wrecked a few times trying to finagle mine with my left hand while giving it a little gas with my right! :???: