How much interest reproduction gas caps?

[paulfromyork]

💡 I’ve been thinking about this, and with out too much extra trouble, Instead of making a cap, I could build a "simple" mold and make many caps. Garry, maybe you know how many gas caps are the same. (?) It just so happens I have a friend who is molding plastic in his garage for fun and profit. Sooo, is the market covered by someone else? No need for a repeat. Or maybe which caps might be hard to find or replace?

It’s still just a wild idea, but I COULD do it. Thoughts please. I hope this post is not some kind of violation of the rules 😳