The Challenger was based on the Plymouth Barracuda platform but it had a larger wheelbase which provided more interior room for its passengers. It was available as both a hardtop and convertible configuration. The SE version was the luxury offering. The R/T, which represented Road and Track, was the performance offering. The standard R/T package came equipped with a 383 cubic-inch engine which produced 335 horsepower. Performance could be improved by upgrading to the 440 cubic-inch engine which boosted horsepower to 375.
The 1970 Dodge Challenger 440 R/T Convertible with black power top, black accent stripes, and sublime green colors was offered for sale at the 2006 Worldwide Group Auction held on Hilton Head Island. It was expected to sell between $250,000-$325,000. It was the fourteenth four-barrel convertible ever built and one of just 163 constructed. It is believed that only 44 exist in modern times. When new, it sold for $5,103.40 which included almost every option that could be ordered. It comes equipped with power steering, power brakes, air conditioning, power top, cruise control, deluxe trim pedals, door jams, luggage rack, bumper guards, and eight-track stereo. At the conclusion of the auction, this vehicle was sold at $159,500. By Daniel Vaughan | Nov 2006