Would you trade two cars for one with a cars salesman?

I have too many cars and will move in a few days. I need a pickup truck to help move. I have a 97 Jeep and 88 Mercedes that I want to trade for a 97 Ford 150. The 88 Mercedes is has been garage storage (looks new as if it was 1988). The Jeep needs a muffler but runs good. Who would come out on top? Good idea?

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