I don't know how many of those kits are put together by bingo folks, and they may just be old.
Making a kit isn't too tough for a bingo pinball, thankfully.
I would suggest buying in bulk 5/16" rubber rings for your yellow posts.
Red posts shipped with 'dead' rubber. Closest modern approximation is http://www.marcospecialties.com/pinball-parts/38-0516H
I've also used black rubber as suggested by my firend Steve.
Rebound rubber depends on the game, but for Bikini should use the white (smaller) rubber - http://www.marcospecialties.com/pinball-parts/38-115-4
And then the larger rings are 1".
Shooter tip, you can either use a tan one or a white one. I prefer tan.
Some of those items can be purchased from the Pinball Resource, or you can purchase them all at Marco Specialties.
Thankfully, almost all bingo pinballs (especially those made by Bally) use these rings, so if you buy a bag of 100 5/16" rubbers for when you inevitably get your 14th game, you'll have plenty of rubber.
And yep, all the coin return plates are held on with twist nails. Easy to bend them and new ones are not available.