help with carb options

OK, a few follow up questions to my original post. If these carbs dont work out what other carbs are a good option? Edlebrocks? Rochesters, back with new Holleys? What are others using? Also what are the recommendations for linkage, synchronized or progressive?
Also where can I get info on what original size jets the 600's had in them new along with the power valve that they came with?
Thanks
Rod