...WOW, is that a set of 300 exhaust hiding back there!! I made a big mistake back when the Nat's were @ Indy. There was a set of those for ~700 and I passed.
Yes, you have good eyes. Those are a pair of Chrysler 300 63-64 J & K ram exhaust manifolds behind the Superstock pipes. Had those in the collection forever too. Jim V.