The original J3 was a basic, doorless, and roofless version, with steering on the left, rather than the right, despite Japan having left-side traffic. The first right-hand drive versions did not appear until nearly eight years later (J3R/J11R). The original J3 and its derivatives were equipped with the F-head "Hurricane" (called JH4 by Mitsubishi, for Japanese Hurricane 4-cylinder) inline four-cylinder, originally producing at 4,000 rpm. In 1955 a slightly longer wheelbase J10 which could seat six was added, and in 1956 the J11 appeared, a two-door "delivery wagon" with a full metal body. This was considerably longer, at versus for the J3.