Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:1827626.

These are the files I used to greensand cast a new intake for my Suzuki FA50 moped in order to use a Mikuni VM-16 carburetor. I used ZA27 alloy, but straight zinc or aluminum should work fine. Files are for the printed test prototype, patterns, and core box. If you're capable of making one, you'll figure it out.