Just wondering if the '03 2500HD trucks came with two catalytic converters standard? From the pictures I have taken, it appears that my truck has two cats and I thought that was usually only needed for a true dual set-up. They were on the truck before I bought it, so I'm just trying to see if the prior owner did some modification or if it rolled out of the factory this way. Also, since I don't have true duals now, are two cats overkill?
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