[dizzyblonde]

I'd say the front cover may have been really scabby from corrosion, so someone swapped it for the rear? (I'm thinking the engine is a black one) but then why would it be silver on the rear?
Saying this as i've done it...lol. My front one was really bad, so i swapped it with the rear...you can tell because the lug that sticks out for the rad to be mounted on, doesn't have a hole for the bolt on the rear cam cover, they only put a hole in the front one for the bolt

there could be many reasons though