Hi all, This week I had another opportunity to look at another 70 GS 455 from the Kansas City Leeds plant. I looked at the 70 Skylark/ GS Rubber Bumper Cushions. This is the fourth car I have looked at and have collected the rubber cushions for. All the Leeds Built cars were built before December 69. All of them had the referenced 71/72 style rubber bumpers but all had 70 rear bumpers attached. 1970 GS 455 Built 9A (will look) 1970 Skylark Built 11A 87k 1970 GS 350 built 11c (dont remember) 1970 GS 455 4spd 11d 44k I know that there is information going around that the 70 style is different than the 71/72. Is this published anywhere because my knowledge from leeds cars are not matching up. I know about different locations and manufactures and leeds was a GMAD facility. Do other GM makes use the same cushions as Buick. This is intended not to be a debate just curious what others have found or additional thoughts on this topic.