Hi. I'm going to purchase a repro "Keep Your GM Car All GM" decal for the air cleaner of my '71 GS 350. It looks like I have two choices. One is listed for "HD", and the other isn't. The letter designation BG or BB is different on both decals , as is the GM air filter part number spec'ed on the decal. The vendor has both decals shown for a '71 350. I've listed the info below, as well as a picture of the HD decal (BG designation). I couldn't find a photo of the BB designation decal. Can someone give me guidance as to the correct air cleaner decal for my '71? Thanks very much for any help. John Choice 1: 1970-71 Skylark Air Cleaner Decal, "Keep Your GM Car All GM" 350-4V HD (BG, #6485520) Choice 2: 1970-71 Skylark Air Cleaner Decal, "Keep Your GM Car All GM" 350-4V (BB, #6485409)
