Well, let's see. You're gonna need:
1. A 5 axis CNC mill
2. Someone to run it, if you haven't been trained.
3. Someone to write the program for it.
4. A sheet metal expert.
5. A welding expert.
6. Several pieces of various materials like aluminum, titanium, Inconel 718, MarM247, and 300 series stainless steel.
7. A good set of specialized tools to put it all together.
8. A protected test cell, so you can run it without hurting yourself.
9. A couple of years of spare time.
10. A good, paid up health insurance policy.
11. A couple of million dollars to do all of this properly.
Or you could fill out an application to work for a company that already does all those things. Of course, that company would not sell you an engine for you to use any way you want to. They don't want to get sued.