There are a few contenders for the title of biggest jeep in the world. One is the JK-8 Independence, which is a conversion kit that turns a Jeep Wrangler into a pickup truck. It has a wheelbase of 118 inches (2,997 mm) and is about 210 inches (5,334 mm) long. Another contender is the stretched Jeep Wrangler LJ, which has a wheelbase of 116 inches (2,946 mm) and is about 218 inches (5,537 mm) long. Finally, there's the Jeep Grand Cherokee SRT8, which has a wheelbase of 114.8 inches (2,915 mm) and is just over 200 inches (5,080 mm) long. So it really depends on how you define biggest.