While Pontiac's GXP division isn't necessarily known for producing staggeringly fast performance cars, the minor visual and power tweaks are usually enough to move a good amount of GXP-badged vehicles off of GM dealer lots. For this year's SEMA show, however, Pontiac is bringing two new concepts -- the Solstice GXP Coupe and G8 GXP Street Concept.
The Solstice Coupe features a Stage 2 GM Performance Parts kit, intake kit, and a cat-back exhaust system, along with an upgraded sport suspension, graphics kit, iPod interface, custom leather-trimmed seats, and race-inspired pedal covers. While the basic engine mechanics are largely unchanged, the added performance modifications boost horsepower from 260 to 290 ponies.
On the other hand, Pontiac's G8 GXP Street Concept gets a whole raft of performance modifications, including the new LSX454 crate engine from GM Performance Parts. Yep, that's the ZR1's engine, and it will crank out 638 horsepower and 600 pound-feet of torque under the G8's hood. Stiffer springs have been added as well as the Cadillac CTS-V's brake kit wrapped behind twenty-inch black chrome wheels. A more aggressive front fascia rounds out the front while a new rear fascia incorporates a performance exhaust system and rear diffuser.
Both of these cars will officially be unveiled in Las Vegas next week.