Difference in timing chain cover?

[UseYourBlinker]

My buddy went with me to get his blazer to pass Smog with his blazer, and he failed because he had a different timing chain cover on it! wtf? Is there a diff between car and truck timing chain cover?

 

[DMK]

Why would they look at the timing chain cover?

 

[keith]

I would just take it somwhere else. There trying to screw you.

79 Blazer 6"lift 35's locked/4:56

 

[Gopherkiller]

Maybe he had a chrome one on it, and the saw that it wasn't stock. I can't think of anything else differnt.