You may just want to call Lightning MFG (www.boatheaders.com). You can buy just the plates from them, as well as the entire kit. With the cost of aluminum these days it may just be less costly to buy a set. A friend had considered this very thing until he priced some 3/8" material :sqeyes: :sqeyes: :sqeyes:. Add in the fact that there are some very specific hole locations that are critical and your better off just ordering a set.