I believe early 1970 FE5 Cudas received the Red bubbles. Not sure how long Chrysler put them on Cudas. If there were any Red Bubble left over after this time Chrysler stopped putting the Red bubbles on Cudas, Fram would of repainted over the red with argent or black paint. All the Shaker Emblems that I have Cuda383, 426Hemi, etc all had the brushed finish on the numbers except the one that has a . My Dodge Shaker Emblems 440 and 426 emblems all have fat end to the emblem making a left and right for each scoop with fat ends on either the letters or numbers. The two pin Shaker fit emblems I own in the MP packaging have Chrome Numbers and I would imagine it was done because it was easier to do than having them brushed.