Forgot to mention, Ive got Hedmen hedders part number 69648. They are the shorties they are the 1 1/2 inch primary. As this is a jeep wrangler with the sbc swap there isnt any room for much else inside the frame. I would have to go outside the frame with any other header. Basically ive got a lifted 4 inch go fast go cart. Oh also 4:11 gears with a electric locker.