Check the listing for details. 1971 Pontiac 455HO Automatic "PN" Code Emissions Decal for Trans Am, GTO, LeMans. Condition: New. Listed at 15.00 USD. 1971 Pontiac 455HO Automatic Transmission Emissions Decal for Trans Am, GTO, LeMans. If you're fortunate enough to own a '71 Pontiac 455HO car with a AUTOMATIC transmission, you've likely recognized that the existing reproduction of this decal leaves a lot to be desired with the wrong fonts, incorrect square corners and poor quality graphics. This decal PN code decal was applied to all 455 HO automatic cars in '71 including GTO, Trans Am, Formula and GT-37.This brand new decal painstakingly captured all the details in the OEM version working closely with experts on the subject matter and referencing original decals. I can confidently say that this is the most accurate 455 HO emissions decal on the market right down to the fuzzy factory text. See my other auctions for the PM code version of this decal for manual cars.These are laminated weather-proof adhesive backed decals that are 2-1/2" by 6-1/2" with a semi-gloss finish.