hello and welcome to TRS~!
Sounds like base model trim and accessories but you have the "premium" engine (4.0).
There is a link to the full Tech Article from The Ranger Station's incredible documentation that I'm sure you will find very helpful...
Anyway, I copied this from the link below for your model year...
[FONT=Arial, Helvetica, adobe-helvetica, Arial Narrow]2001 - [/FONT] The Ranger is available in three trim levels. Between base XL and fancy XLT is the new Edge model. It has a sportier cabin, 4x4-level ride height (even when equipped with two-wheel drive), and a monochromatic exterior that mimics the burly look of Ford's F-series Super Duty pickups. The cream of the Ranger crop, however, will be the XLT SuperCabs that get the Premium Offroad package.
At about $1500, the package greatly enhances the 4x4's off-road ability with fifteen-inch forged aluminum wheels, BFGoodrich T/A KO tires, Bilstein dampers, a Torsen limited-slip differential, skid plates, and tow loops. Inside are grab handles, unique seat fabric, and bright-metal stalks for the gearshift and transfer case with cue- ball knobs that seem far too cool to be original equipment.
Under the hood, the 150-bhp, 3.0-liter V-6 is carried over, as is the 119-bhp, 2.5-liter four (a more powerful new four, displacing 2.3 liters, is due this winter). The optional 4.0-liter OHV V-6 is gone, supplanted by the 4.0-liter SOHC V-6 from [FONT=Arial, Helvetica, adobe-helvetica, Arial Narrow]the Explorer. Mated to a five-speed manual transmission or a five-speed automatic, the SOHC six produces 207 horsepower and 238 pound-feet of torque47 horsepower and 13 pound-feet more than the engine it replaces. The new V-6 moves its charge off the line with authority and hums along at highway speeds with none of the breathlessness of the old engine. It also enables a properly equipped '01 Ranger to tow more than 6000 pounds. [/FONT]
The Ranger team has revised the suspension to quell the previous truck's somewhat wallowy ride and herky-jerky handling. Safety has been enhanced with the addition of standard four-wheel anti-lock brakes and electronic brake-force distribution, and a thorough noise-reduction effort has brought remarkable quietude to a cabin that sports supportive new seats, a revised instrument panel, and a standard single-disc CD stereo (an in-dash six-disc changer is available, as is the stunning 560-watt "Tremor" audio system).
The Tech Article with the full trim level description can be found here:
http://www.therangerstation.com/resources/RangerHistory.htm
Happy reading...and motoring...