If you are still in the market for the Holley, I have a 600 cfm. I still have the box, extra set of the float bowl gaskets, electric choke, vacuum secondaries, installed the quick kit for changing the secondary vacumm spring, and two sizes of jets. Carb was on my bronco for about 2 years until 9 months ago, and was doing fine except for fuel mileage. It has been wrapped and stored in dry, clean space. Let me know. I will try to check email, send a private message. Thanks.