Hyundai's trifecta of SEMA-bound Genesis Coupes is complete, and the latest tuned, rear-wheel-drive two-door comes courtesy of Street Concepts. Unlike the turbo'd models from RMR and HKS, the Street Concepts Coupe is packing the 3.8-liter V6 fitted with a custom cold-air intake and a Magnaflow exhaust. According to Street Concepts' owner, Shawn Williams, their aim is to "maximize the driving capabilities of the Genesis Coupe while striving for a level of practicality..."

To that end, the only performance mods – outside of aiding the V6's breathing – include a modified suspension, Brembo brakes and 19-inch Volk wheels shod in performance rubber. The exterior benefits from a black camo and "stealth fighter-inspired paint design," along with tinted head and taillights, APR rear wing and custom grille. Inside, carbon fiber trim joins a pair of Cobra seats with black suede accents and an Infinity audio system.

With the Coupes covered, we're waiting to see who Hyundai tapped to tune its three Genesis sedans. We're sure they won't be nearly as entertaining on the track, but a few VIP-styled sedans could do a lot to stoke the image of the Genesis.

Believe it or not, but the car above is based on the current generation Ford Mustang. We don't have a lot of details, but we do know that it's a Ford concept car codenamed "Project B" that is being built by Galpin Auto Sports and will debut at the SEMA show in November. Power will come from a twin-supercharged Mustang V8 that has been stroked to 5.0 liters. Massive wheels, 24 inches in the rear and 22 inches up front, engulf 16-inch Wilwood brakes. Our sources say that this will also be the very first car to feature Ford's second generation SYNC system. The concept definitely has an interesting design, and we're anxious to see the finished product in November.

The 2009 Lexus IS-F is slated to get some serious attention at SEMA, and Fox Marketing and Artisan are out to prove that show and go aren't mutually exclusive.

The plan is to create an IS-F that has the power to match its presence, and to that end, Artisan developed a twin-turbo setup that huffs compressed oxygen into a 5.0-liter V8 equipped with JE pistons and Crower rods. With a Mishimoto radiator, an Artisan exhaust, a healthy amount of boost and a thorough tune, Artisan is estimating over 600 hp at the rear wheels.

Aesthetically, the team sought to compliment the stock IS-F's styling, so they've fitted a bespoke body kit consisting of custom front and rear bumpers, and a set of side-skirts that cleanly integrate into the blistered rear fenders. iForged rollers fill the wheel wells, sized 20x9.5-inches in front and 20x11.5-inches in the rear, and wrapped in Toyo T1R tires (255/35R20 front and 305/30R20 rear). The Glasurit Sunset Orange hue is courtesy of BASF, and according to Brian Fox, they'll be blacking out the headlamps, grille and emblems to tie everything together.

Artisan plans to have its IS-F exhaust on sale next month, and when we check out the Lexus booth this November, we'll be able to see Fox/Artisan's efforts in person, along with a handful of other tuned and tweaked IS-Fs.

Of all the trucks that have proliferated into the Mercedes-Benz line-up, the GLK isn't exactly the most aggressive. But according to the latest reports, Mercedes is lining up an array of aftermarket tuners at the SEMA show to infuse what appears to be more than a little testosterone into the compact sport-ute.

First up to bat is RENNtech, the Florida-based company responsible, among other things, for the bringing the McLaren SLR 722 to America and actually getting it to produce 722 horsepower. RENNtech has taken inspiration from the Pikes Peak challenge – one of the most iconic and power-craven hill-climb events in the world – to create this hardcore GLK. Little is known in the way of details, but the vehicle is said to feature RENNtech's first performance hybrid drivetrain.

Brabus, Blvd Customs and Legendary Motorcars are also said to be preparing modified GLKs for SEMA, although Mercedes has not yet confirmed its participation in the show.