Scuffed them with a scotch-brite pad and wiped them down with acetone.
Taping these up is a MAJOR PITA. All I can say is use the thinnest tape and have sharp Xacto knives.
Put 3 coats of Ford Red engine enamel on them
Start the peeling process - another PITA
Finished product. There were a few lines that weren't that great after peeling the tape so I touched those up with Rustoleum Gloss Black and a little brush.