Once a motor burns a piston and there becomes excessive pressure in the engine this is when things can get ugly. Spit a foam gasket out and get oil all over everything its a 200 mph slip and slide.
Do yourself a favor install these with a dab of RTV silicone at the corners and enjoy a day out at the track. Fits BAE, Indy, Mopar and KB engine blocks.
Channel lip measures .340" wide, center lip .860" wide and the other side channel lip is .470" wide. Thickness is .035" on the lip. Both channels are the same measurements.