I grabbed a bally bingo recently from a basement. I hauled the beast home and found that it was infested with a huge amount of mice droppings and rusted to oblivion from pee. I kept the playfield but am afraid I'll get Ebola if i try to clean it for a wall hanging.
Long story short - I got 7 undamaged light covers in a bag(needs some cleaning) for you. The rest is in a landfill. If you need any posts, the red bally shooter lane thing or outside edge springs let me know. Good luck on your project. I'd personally rather fix a bowler than a bingo! What a big job.
Message me your address if you still need them.