Tokyo Marui was also at the forefront of the developing radio control hobby in the mid-1980s with a line of high-quality , monster trucks and even an unusual NASCAR Winston Cup stocker, all in kit form. This kit of Bill Elliott's Coors Melling Ford Thunderbird was built on a four-wheel drive buggy chassis; despite that full-scale NASCAR racers are rear-wheel drive. The body could be raised or lowered for either onroad or offroad use and two full sets of wheels and tires were included, pre-mounted sponge slick tires for onroad and knobby spiked rubber tires for offroad. The Big Bear Datsun, a 1/12-scale monster truck topped with a Datsun pickup truck body, powered by a Mabuchi RS-380 motor and initially sold via mail order, was one of the best-selling radio controlled models of the period and contributed greatly to the hobby's growth.