I'm going to patent it, and sell the license to an aftermarket company and make millions of dollars.
So, your going to sell them for $500,000 each???? The three or four people in the world that would actually want one (THAT'S why nobody makes them) better be rich.
Companies don't make a part because some
one wants it. They make a part because thousands of people want it.
Go for it. Let us know how it turns out.