This 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. Screws included. You need to glass bead all surfaces prior to assembly. If you do not have the equipment available to glass bead the parts, you have another option. I can restore your throttle bodies for you. Usually, I find customers do not need new throttle blades when I inspect them. When I restore a pair of end throttle bodies, I charge 130.00 a pair (both end throttle bodies.) This service includes pulling yours apart, inspecting shaft for wear, glass beading all parts, paint throttle body, re-assemble, seal blades, install new torsion springs. If your passenger side levers are not damaged, I will replace them with replated originals. Price includes shipping back if you are in USA. E-mail me for details. Usually I have a quick turn-around...just a few days.