Single Kit now fits ALL Models.
APCO300 is the common panel that covers most of the head. To identify the other panels you may want to keep the following in mind.
APCO100 is 1 1/2 times the width of the APCO300 panel does not include a notch and is located on the left side of the header from the drivers' seat.
APCO200 is 1 1/2 times the width of APCO300 panel, is notched and is located on the right side of the header from the drivers' seat.
APCO400 is only 7.06" long. It fits only 16 1/2", 17 1/2' and 22 1/2' headers.