i owned a 66 Polara 500 convertible 4 speed. I bought from original owner. he bought new at Gerdon's Chrysler in Corydon, Ind. it had 383 LOW performance 383 4 bbl with SIngle exhaust!. had console/tach, ps pb. got crushed at Wrights salvage in Louisville, ky. i've 66 converts and 66 4 speeds...