Hmm
I don't agree with all suggestions.
The white and red bag is what Kirby used on rebuilds. The gold bag is bag from cr1 classic. It started production in 1970.
If the fans are metal and not chipped keep them on.
The bearing plate you don't need a bearing puller. The top of bearing plate use a nail tap. It could also be called a set. If you tap it the bearing will come out other side.
I'm only mentioning this as you said your frugal. Clean bearings repack/grease reinstall. I'd change carbon brushes and belts. Your brush roll just use adjustment screws they should last.
If you want aesthetics swap out the classic bag for another bag. If you want to trade I have a greyish bag with red diamond with a k in middle of the diamond. It matches grey and red hues from both of your vacuums.
If you get some steel wool go over the vacuum it will clean out most imperfections.
The belt and carbon brushes might cost $10.
You change nothing else just steel wool and maybe polish.
The 561 4 amp motor is awesome. The 514 may have same motor if it's been rebuilt ever. They perform very well and easy to upkeep.
So don't buy bearing plate, fan or others. I'd do just belt and brushes. If you like it and want to change more you will know by then how much or how little you want to spend if any doing things like fans or bearing platez.
Les
