"E" stands for Extreme, and with a 500-horsepower engine generating about 480 lb.-ft. of torque, this Saleen S281-E has no problem living up to its name.

Only the 4.6-liter V8 motor's original block is retained during the modification - Saleen replaces everything else and re-assembles the engine in-house. The S281-E contains a forged steel crankshaft and connecting rods, forged aluminum pistons, and special aluminum cylinder heads with unique valve springs and performance camshafts. The result is an engine with a higher redline and more power.

Then Saleen installs a twin-screw supercharger to blow the horsepower and torque ratings into the stratosphere. With all this firepower on board, Saleen claims that the S281-E will run to 60 mph in about 4.5 seconds and can blaze the quarter mile in 12.1 seconds at 117 mph. Other engine modifications include a Saleen PowerFlash performance engine management system, a variable design muffler system that reduces engine backpressure while creating an intoxicating wail at speed, and a free-flow air cleaner.

A heavy-duty, close-ratio Saleen six-speed manual transmission manages the muscular mill, shunting power through a high-performance flywheel and clutch disc assembly to a custom-balanced driveshaft and Saleen MaxGrip limited-slip rear differential.