I've seen a bunch of setups most with added compression and high lift cams. My setup will be 95 ci flat top 9.3:1, tw37b, khrome werks hp plus with crossover, ness air cleaner with K&N and the hsr42. I have seen setups with 17.5 pilot 97 needle middle grove 50 ac and 165 main. and 20 pilot 98 needle middle grove 50ac and 165. It seems to be a concenses on the main jet and the ac. For my setup what would be a close setup to adj from. I'm in Nova Scotia , Canada. The dealership that I'm with has helped me alot but has not done many big bore upgrades and is possibly not that knowledgeable on this carb. Thank you for your time.