Well, for something you are going to potentially trust your life to, starting on your own car first sounds like maybe a risky idea.
I would love to build my own if I had the resources but with the way I have “built” other stuff in the past makes me trust my life playing russian roulette with a full clip over flipping my car with a cage I made myself.
You sure you think you can produce/weld in a quality one then go for it:headbang: