I used mothers billet but i would say autosol would work good to. Autosol always did a good job on my old centerline rims.

 

autosol for the win

love the stuff
whole sled is done up in it

 

^^ autosol!

 

autosol...all my rims..tunnel...head on my buddys RD350 race bike...get a polisher for the end of a drill and set to slow rev...goes real good for floor board and around foot wells!

 

is it just autosol, or is there like different substances ?(like mothers BILLET, aluminum, etc.)
where can I find it?

 

Autosol is a better product. mothers is good, but there will be more work involved.
You should be able to find it at your local parts store. I think i bought mine at napa.
To make life more simple, do yourself a favor, buy a polishing ball to fit on your drill. 2x faster, less work. goodluck.