The 31 swtreet rod that I just bought had a brand new 1411 Edlebrock 750 cfm, electric choke, non emissions carb on it. It was a tad too much for the engine. I put a new 1406 600cfm carb I had here on it and it made a world of difference. Summit is asking $299 for their's, I will take $240 for the one I have. Ron Butts