Doing a pretty in depth restoration under the hood of my 60 and I'm trying to find the best way to bring my valve cover and all the other aluminum bits back to a factory finish. I've got a glass bead cabinet that I can stick it in which is fine for the thermostat housings, but I know it'll change the finish/color of the cover which I'm really trying to avoid. The condition isn't bad at all, no pitting or anything, just some staining from 35 years of use. I could send it to be vapor blasted but I'd really like to handle it myself. I'm thinking chemical cleaning is going to be my best solution but really don't know what would be best to use. Searching brings up so many different products it's tough to figure out what is truly effective. I know I'm not the first person to go down this road, so what do you all suggest?