All Classified forums require a Site Supporter subscription. It is only $25 per year and you can buy and sell whatever you like on the forum. To become a Site Supporter, go to Your Profile and select "Paid Subscriptions."
Are you sure it's 300-3? There is no listing on the Holley site for that.http://www.holley.com/types/Chevrolet%20Big%20Block%20-%20Carbureted.asp
That intake has NO business on a 3/4 ton crew cab truck! The tall plenum, single plane design is more for mid-high RPM use. Swap meet material! Either use a stock dual plane or buy a aftermarket dual plane & preferrably a good working Q-jet. Lorne