About a quart size tub of elbow grease?
I don't know what you know, but here are a few of my "tips"
Start with a soapy wash and a pressure wash if you can.
Covers, things you want shiny.
Get the clear off It really speeds things up to use stripper and remove what remains of the clear paint first.
Depending on how bad the corrosion is use increasingly fine wet sand paper to remove it and get a consistent patina over the whole piece. I normally end with 600 before going to the the buffing compound
Use rouge sticks and a buffing wheel mounted in a pedestal grinder to bring up the shine. Wear gloves mask and glasses the part will get very hot and the threads wearing off the polishing pad get everywhere.
I am sure there are many good brands but blue magic chrome cleaner is a good choice. There are a lot of POOR brands of chrome cleaner out there, the difference is huge.
I alway go get a couple of packs of REAL brass brushes for removing rust from chrome They have to be all brass many are brass plated steel which will ruin (scratch) chrome. Walmart sells three for $3.00 in the paint dept. dip it in the chrome cleaner and have at it. the brass bristles are soft and will mat down figur on using up all three on one bike. I have found mineral spirits to be a good engine cleaner degunker it is flammable so use it outside.
a semi gloss silver helps the cases look their best, depending on how far part the engine is going a small paint brush and spray rattle can silver in the cap and brush on in problem areas.