WTB: rare or custom parts to make a smoothie/shortie 3p kind of thing

I want to make a 3p type short light from miss match parts, I'll be needing/wanting

A 16340 body, preferably a custom or surefire type but not a solarforce because that's what I'm using now

A surefire or custom tailcap, the plan is to fit a ZeroRez to add 15mm and use a 17500

And a head/bezel, preferably something smooth like the original 6p without the anti roll hexagonal part. I saw a smoothie made by overready apparently but I can't see it on their website ?

Any parts considered

Thanks
Jamie