[Funky61]

Welcome Brian62GMC,

You have to modify the stock air cleaner to fit or just go aftermarket.

You can bolt this upgrade on, but some suggest you remove the intake manifold (*Need new intake gasket) and enlarge the opening to match the adapter.

Also I think you will need a longer manual choke cable. Some folks have played around with jetting the carb down, but that can be done later once you see how it runs. You should be pleased.

Which electric fuel pump are you using? I think the Holley requires 4-7 psi.

Any photos of your truck? Good luck with your conversion. Henry