Curious - what did you use for an oil cooler?
Oh, and I had JUST finished doing the same thing to my valve covers about 30 minutes before I read your post - I did it ass-backwards though.
Been following your work, good stuff. I'm an older amateur at this but I've got my dream car. When you all clean up your turbo shield's, valve covers, and other pieces of the like are you hand sanding, brillo'ing, sand blasting? Any chemicals, primer, or just spraying the Dupli color engine paint right on top the cleaned part? Time to get the hobby rolling more serious.