Here's what I do and it will take a little time; first I cleaned then with some laquer thinner the taped and sealed every opening and then glass bead blasted the metal items. Then tool 000 steelwool and some good metal polish and made them as clean and smooth as possible. Then I took metal polish (Semichrome paste) and a buffing wheel and polished them to a chrome like finish. From here it's your choice, use RPM, a good parifin clear wax or clear engine (hi-temp) enamel and coated them to maintain the finish. Some of the parts that I wanted with a satin finish I of course didn't use the buffing wheel.