The Saleen Foursixteen is based on the most powerful factory Tesla Model S, the P85. Under the hood there's a three-phase, four-pole AC motor turning out 310kW of power and 600Nm of torque straight from the P85 Model S.
21-inch alloy wheels are shod with 245/35 rubber up front and 295/30 tyres at the rear. Saleen has also revised the suspension setup, sway bars and traction control system. Larger 14-inch-plus (356mm) disc brakes are now fitted as standard to the front and rear ends.
Externally the Foursixteen is distinguished not only by its larger alloys, but also by its unique front and rear aprons, as well as the large deck-lid spoiler.
Drivers who want more performance can opt for a 11.39:1 final gear ratio transmission. Other options include the company's Maxgrip locking rear differential, fully adjustable suspension and carbon ceramic braking package.
Saleen hasn't supplied performance figures for the Foursixteen, nor has it indicated how far the revised Model S can travel between charges.
The biggest upgrade to the interior is the addition of a centre tunnel console, which adds a covered storage area, a smartphone pocket and a cupholder. Other changes to the interior include a new mix of coloured leather accents and facings, as well as carbon fibre highlights.
The Saleen Foursixteen will retail for US$152,000 prior to taxes, as well as state and federal government rebates. An unaltered Model S P85 costs $94,570 before tax and rebates.
As the company's first electric vehicle, the new Foursixteen makes an interesting addition to the current line-up, which consists of the S302 (a reworked Ford Mustang), S570 (an upgraded Dodge Challenger) and the S620 (a remodelled Chevrolet Camaro). All those vehicles feature, depending on the specification, either retuned naturally aspirated or supercharged V8 engines.