The factory made no 1971 Challenger R/T convertibles - anybody selling one as a "clone" is wrong - they are technically considered "phantoms." I've built a few phantoms myself including a 1971 Panther Pink Challenger "R/T" convertible with a 440-6 and the 1971 Plum Crazy Challenger "R/T" convertible with 440 and shaker (4 wheel disc brakes and a/c) shown in my signature.