I had a Falcon weber on mine, 34ADM i think it was.....wayyyy to big for any K engine. It ran, but not well....if i was to "get under it" it would blow this huge arse big black smoke screen out the back end.....and the people behind me would give me dirty looks...:P
That was when i first got the engine running, I then aquired irokins old carby off his 3k ke20, it was a 32ADFA and it was much better....we got the car to run fairly good with that carby, it just needed slightly bigger jets, but it was running fine, so i didnt bother.
I now have twin 1.5 inch Su's on it, IMHO i reckon atm the su's are about the same as the single 32adfa, however the su's do need different needles in them. Its running fine atm, i reckon i've lost a bit of top speed accleration, but i've gained it down low.