57-58 End Carb Throttleblades Tri-power Engine Compartment I do have swing arm

I do have swing arm available for $90

It connects to the top of the front fuel block and allows for clearance for the Ram air pan

spilling onto the intake

If your choke plate is missing or damaged this replacement plate is noe available

57-58 End Carb Throttleblades Tri-power Engine Compartment I do have swing armThis 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.