Have you checked out
www.eastwood.com ? They have all kinds of ways to polish and protect glass, plastic, and metal
Look under buffing/metal finish, and specialty coatings(diamond clear). I've used lots of their products for years.
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1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans
1962 SC 1776cc SP 944NA brakes, 993 wheels
VKG