'71 Dodge Challengeraa11 (37)in #cars • 6 years ago The performance model was the R/T (Road/Track), with a 383 cu in (6.28 L) "Magnum" V8, rated at 335 bhp, 300 bhp for 1971, due to a drop in compression. The R/T was available in either the hardtop or convertible. #life #style #esteem #ride