With two cab sizes, four bed sizes, four trim levels and a long list of options and available packages, there are dozens of ways to configure the Titan to fit the job at hand. Every Titan gets the 317-hp 5.6L V8 engine, which is capable of running on E85 bio-ethanol fuel and a 5-speed transmission. Front air bags and ABS are also standard features. The King Cab can be matched with either a 6-foot-6-inch or 8-foot bed; the Crew Cab gets either a 5-foot-6-inch or 7-foot bed and rear half-doors that fold flat against the bed sides for easy entry. The four trim levels, from the most basic to the most feature-filled, are S, SV, Pro-4X and SL. The 5-passenger S King Cab starts the model out with 168-degree Wide Open doors and a CD stereo. The 6-passenger S Crew Cab adds power locks, windows and rear glass and two more speakers. Both are available as rear-wheel or 4-wheel drive trucks. The SV has everything the S does, plus 18-inch alloy wheels, chrome bumpers and grille, power mirrors, remote keyless entry and 6-disc in-dash CD changer. Like the S, it comes in either rear-wheel or 4-wheel drive. The Pro-4X takes the features of the SV and adds off-road capabilities, such as electric locking rear differential, Rancho shock absorbers, lower gear ratio, two additional skid plates, fog lights, bed lockbox, upgraded interior trim and white gauges in the dash. The Pro-4X is only available in 4-wheel drive. The SL takes the features in the SV and adds a load of extras: 20-inch alloys, automatic headlights, spray-on bedliner rear sonar system, 10-speaker Rockford Fosgate stereo upgrade, Bluetooth connectivity, dual-zone temperature control, heated front seats and power adjustable pedals. It takes a few features from the Pro-4X, too, such as fog lights and bed lockbox. All Titans now get Nissan's Vehicle Dynamic Control and side-impact airbags as standard safety equipment. Besides these cab sizes, bed lengths and trim levels, there are several packages of options available for the Titan: Max Utility, Side Airbags, S Popular Equipment, SV Popular Equipment, Heavy Metal Chrome, Driver's Convenience and Technology. Most of these packages include features that are standard on the SL version of the Titan, but some, like the Side Airbags package, is optional for all models. It includes roof-mounted airbags, side-mounted airbags and vehicle dynamic control. The exact features included in the Heavy Metal Chrome package depend on the model, but it generally includes chrome wheels, chrome step rails, chrome billet grille, chrome door handles and on the SV Crew Cab, chrome mirrors. The Driver's Convenience package substitutes an 8-way adjustable front captain's chairs for the standard 40/60/40 split front bench. Bluetooth and the upgraded sound system are also included. In the Crew Cab configuration, this package includes a sunroof too. The Max Utility package makes the Titan into the ultimate workhorse, with spray-in bedliner receiver hitch, 7-pin wiring harness, heavy-duty battery and front tow hooks. The Pro-4X and SL versions of the package include heated tow mirrors in addition to all of the other features.