At a rock crawling competition, you might see some Broncos, and some Toyotas, but Jeep will be by far the most represented brand. Let's examine what makes these Jeeps so capable.

Vehicle: 1966 Jeep CJ-5 Diesel Serial Number Range: 10,813 -11,892 (to Jan 1, 1968: calendar year not model year) Engine: four-cylinder, DI diesel, Perkins 4.192 Power: 62hp @ 3,000 rpm ...