Image Credit: Barrett Jackson.Ram is sending the first retail-production 2027 Ram 1500 Rumble Bee SRT to auction, although calling it a standard production truck would be a stretch. This one-of-one example has been upgraded to produce over 900 horsepower and will be sold for charity at Barrett-Jackson's Las Vegas auction.The deal gets considerably better for anyone with an appreciation for Ram's performance-truck history, as the winning bidder will also receive a customized 2005 Dodge Ram SRT-10 powered by the same wonderfully excessive 8.3-liter V10 found in the Dodge Viper.The two trucks will cross the auction block as a pair on September 11, 2026. The entire hammer price will benefit Folds of Honor and the UFC Foundation, while Barrett-Jackson is waiving its fees and commissions.AdvertisementAdvertisementTogether, the trucks offer a fascinating look at two different eras of Ram performance. One represents the days when stuffing a Viper engine into a pickup seemed perfectly reasonable, while the other shows what happens when Ram applies the Hellcat formula to a modern widebody truck.The First Rumble Bee Gets More Than 900 HPImage Credit: Barrett Jackson.A regular 2027 Rumble Bee SRT is already outrageous, using a supercharged 6.2-liter Hemi V8 producing 777 horsepower and 680 lb-ft of torque. Ram claims it can reach 60 mph in 3.4 seconds, complete the quarter-mile in 11.6 seconds, and eventually hit 170 mph.The first retail-production example takes things further with a Direct Connection 3.0-liter supercharger upgrade and MagnaFlow stainless-steel cat-back exhaust. Those modifications push targeted output beyond 900 horsepower.Its chassis is equally serious, featuring Bilstein DampTronic Sky semi-active dampers, four-corner air suspension, six-piston Brembo front brakes, and massive 22x12-inch wheels. There is also an electronic-locking spool differential designed for drag launches and burnouts in rear-wheel-drive mode.AdvertisementAdvertisementRam finished the truck in a hand-painted combination of Molten Red Pearl-Coat and Diamond Black Crystal Pearl-Coat. Rumble Bee graphics, a black hood stripe, red accents, and a one-of-one center-console badge distinguish it from the regular production version.The Winning Bidder Also Gets A Viper-Powered SRT-10Image Credit: Barrett Jackson.Sharing the spotlight is a customized 2005 Dodge Ram SRT-10, one of the most memorable performance pickups ever built. Its naturally aspirated 8.3-liter Viper V10 produces 500 horsepower and 525 lb-ft of torque, figures that were extraordinary for a pickup two decades ago.The SRT-10 earned a Guinness World Record for the fastest production pickup, reaching 154.587 mph in 2004. This particular example has been modified by ProMotorsports and RealTruck with a yellow-and-black exterior, Viper-inspired bedside graphics, matching wheels, upgraded leather upholstery, power running boards, and a tonneau cover.Placed alongside the Rumble Bee, the SRT-10 demonstrates how dramatically the performance-truck formula has evolved. The new truck has nearly twice the horsepower while delivering acceleration that would embarrass plenty of dedicated sports cars.Two Generations Of Ram Muscle Trucks For CharityBarrett-Jackson will sell the pair at approximately 3:30 p.m. PDT on September 11 at the Las Vegas Convention Center. The winning bidder will also receive a VIP UFC Experience for a future event of their choice.AdvertisementAdvertisementThe auction coincides with the 25th anniversary of the September 11 attacks, with proceeds supporting educational scholarships through Folds of Honor and charitable initiatives through the UFC Foundation.For one collector, the auction offers an unusual opportunity to acquire two bookends of Ram's muscle-truck history in a single bid. One has a Viper V10, the other packs over 900 supercharged horsepower, and subtlety clearly wasn't invited to either project.If you want more stories like this, follow Guessing Headlights on Yahoo so you don't miss what's coming next.