For posts these are the two you will need:
Post 1 inch concentric fin red - short
https://www.marcospecialties.com/pinball-parts/C-951-7

Post 1-1/8 inch concentric fin red - tall
https://www.marcospecialties.com/pinball-parts/C-952-7

Great game!

It's been a few years since I owned one but it's mostly talls if I recall correctly. Maybe 30 posts altogether on the game. But I would measure before you order, you can do so on almost all the posts without tearing anything down.