Starting to save for a rebuild when the time comes. Toying with the idea of doing an efi to carb conversion. I have a 96 ci now. Guess the question is what carb would I use going to like a 106?

 

Converting to carb is quite expensive, probably a lot more than staying with your EFI! The obvious carbs are S&S or Mikuni. There are HDF sponsors who make kits such as 107", including Fuel Moto, who can probably supply all you need, including advice on such things.