UFO Stack 4412XP (base not included ) 12-1/8:275.0 These clamps simply snap into

These clamps simply snap into place to prevent the unpleasant electrical taping or loss of U-Joint end caps

What is a Velocity stack

you will be able to interchange center sections to fit each carburetor type

This spacer comes only in the 1' height

Our most extraterrestrial velocity stack version to date

UFO Stack 4412XP (base not included ) 12-1/8:275.0 These clamps simply snap intoOur most extraterrestrial velocity stack version to date. The UFO stack allows you to have all the benefits of our original stack, without the use of a top filter! And no more rivet holes! Simply run a thin bead of silicone around the bottom side of the stack and press it into your air cleaner base. Once it sets, youre ready to go! The centers of the stack are also removable, so if you have multiple cars, you will be able to interchange center