Paul, then you did have the 73 SR 433. That was the only year for this body. The bumps over the plugs are on the SR 643 and SR 292, SR 433 was flat. The scoop was a air duct for the brake, it was part of the 73 GYT kit. The GYT kit for your SR 433 was Circle M fuel injection, new cyl,s, pistons and pipes, also the scoop. Go find your sled and get it back!