Asking the experts.....



So.. I pick up scrap from this German guy, heavy accent, who works on German cars out of his home garage; BMW and Mercedes to be exact. On my last pickup from him, about 3 weeks ago, there were several exhaust systems, including the cats. 4 cats and one precat all together. So naturally I am excited. I cut the cats off the exhaust to find all but one are empty and figured he had taken the honeycomb out. Oh well. The cat that was full I set aside. One of the empty Mercedes cat I also set aside thinking maybe I am not seeing something and was planning on taking to my buddy who is a mechanic and asking questions. (You know, wishful thinking). I scrapped the rest of the exhausts and empty cats.

I went this morning to pick up more scrap from this guy. He had called me yesterday for a pick up but I was working out of town and could not be there until the morning. He said he had aluminum wheels among other things. Sometime after he called me and before I picked up the scrap someone else had taken the wheels.

When I showed up this morning the guy said he felt bad because someone showed up and took the wheels after he called me. So he decided to give me the honeycomb he had taken out of the cats.

The weight of the honeycomb is about 10 lbs. I figure that is probably 3 or 4 cats worth of honeycomb. But I am asking folks here on SMF who have more expertise about items of this nature.

How can I prove the honeycomb is out of Mercedes and BMW other than having one of the empty Mercedes cats? Because obviously some cats are worth more than others.