57-58 End Carb Throttleblades Tri-power Engine Compartment Those are the ones that

Those are the ones that have been on the market for many years

If your's is missing or damaged this is what you are going to need

If you are pulling your intake manifold you will need to replace your intake manifold gaskets

Manufactured here is the USA

These gaskets are FEL-PRO considered to be the best on the market

57-58 End Carb Throttleblades Tri-power Engine Compartment Those are the ones thatThis also fits all small base Rochester end carbs, including J 2 Old's, 348s, and early Caddy's. Excellent quality. Manufactured here is the USA. Although this is an exact copy of the original, installation in a used throttle body does not guarantee a perfect result. I include a small quantity of DAG213 which will be required to seal these perfectly. It looks like black paint and is applied to the edges of the throttle blades after installation.