My recent Experience with a Great Local source for GM service Spears they were very affordable. I stored them for ten years. Finally went to put them on and the GM Plastic wrapping with the blue-green GM screen printing Bonded to the Anodized Alum transferring the Blue to the PART! Same thing Happened to my NOS Wheel Well arch trim. So out comes a variety of means and methods to Remove the staining and not destroy the factory finish.  I was thinking of starting a thread on this hazard when purchasing VERY expensive NOS Alum- Anodized GM trim. I am not sure as a seller or buyer how this can be assessed or mitigated. So to Chuck I stuck to my Guns and installed Gm spears and they fit fantastic. I have never installed imports so I can not comment on those.
		 
		
		
		
		
		
		
			
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				69 Los Z11 
68 SS/RS 396/325 
68 Los Z28
  
			 
		
		
		
		
		
	
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