NA Miata handle cup
thingiverse
Hopefully this will help someone out. I broke mine and didn't see one on here already. This is for my NA Miata but I'm sure it could work with NB as well. I printed this so the backside is on the bed. That way the part you see is much cleaner.
Download Model from thingiverse
With this file you will be able to print NA Miata handle cup with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on NA Miata handle cup.