We have designed a nice split face bulkhead fitting for 73 to 93 mustang that require zero cutting or drilling to install. These are 3d printed for a high temp and chemical resistant material making them ideal for under hood temperatures. This can be made as a blank, 1 large holes, 2 holes, and 3 holes. Single holes varients are 28mm, 2 holes are 28mm for the center and 16mm for the smaller holes, and three holes are 28 for the centerand 16mm for the 2 outside holes.