Quoted from Manny65:
If you don't already have them, download the manual and parts list from IPDB (scroll down to the Documentation section) https://www.ipdb.org/machine.cgi?id=1267
You'll be able to find the specific part numbers of what you are needing to replace and then you can use https://www.pinballsearch.com/ to search the pinball suppliers around the world for the parts you are looking for. Being in the US, you'll probably find that you can get most of the parts you need from marco's, pinball life, pps ...
I guessing this is the part you are needing https://www.marcospecialties.com/pinball-parts/03-8750
He's looking for an aftermarket protector mod, not an original part.
I think a few pinsiders have made airball plastics. Try searching the marketplace and shop to see if anyone is currently offering them.