I've just replaced my crappy old Carter with a 2100 upgrade kit which I bought from Michael Ehrmann on Ebay (PM me if you need details). I've no smog test here so it was pretty basic, but I know he does regular smog kits.
I am extremely happy with the results of the swap - took less than 3 hrs for an idiot like me and now the Jeep runs SO smooth. The carb was already jetted and ready to go. In fact the intial startup took less time than a regular crank
All this junked
Now so much neater!