Guy advertises 4973 carb on marketplace. I asked if it was complete and had no frozen parts and also if it needed a rebuild. Guy gets back to me and says it might be missing parts and it will definitely need to be rebuilt. Tells me $800. I replied back and said way more than I want to spend on a core missing parts. He then replied and told me its a rare carb and to educate myself on how much parts go for these days....Especially rare ones....went back and forth a few times and got nowhere. This is big business and no hobby for some.