Why include a Jeep amongst all this high-performance metal? Because a manual transmission adds an extra dimension of fun to 4X4s, too. An automatic lets the vehicle slowly crawl over the worst trail obstacles; all the driver has to do is steer and gently apply the throttle. Creeping up and over boulders with a manual transmission is challenging and requires just the right shift, throttle, and clutch work.The Jeep Wrangler Rubicon is one of the most capable 4WD vehicles ever produced, and one of a handful of 4X4s today that offer a manual. The Chrysler NSG370 6-speed has been the manual used on Jeeps since 2005. No, it's not effortless to use like a sports car transmission. But it does operate smoothly and really brings out the personality of the Wrangler's new 285-hp 3.6-liter V6. Now get out there and get off-roading.