Hennessey is sending off the current-generation Charger and Challenger in style with the launch of its new H1000 ‘Last Stand’ packages for the two beloved American muscle cars.

Dodge has been building Hellcat-powered Charger and Challenger models for nine long years and as the name implies, Hennessey’s upgrades lift their output up to 1,000 hp and 948 lb-ft (1,285 Nm) of torque. The Texas tuner has achieved these gains thanks to a larger supercharger, upgraded fuel injectors, a high-flow induction system, a pulley upgrade, stainless-steel long tube headers, high-flow catalytic converters, and a crankcase ventilation system.

Read: Hennessey’s 1,000-HP Camaro ZL1 ‘Final Edition’ Wants To Be A Demon Slayer

The added horsepower and torque allow both the Charger and Challenger H1000 Last Stand models to rocket to 60 mph (96 km/h) in 2.8 seconds and down the quarter-mile in 9.9 seconds at 141 mph (227 km/h). Hennessey has also made some visual updates to the duo but unlike some of its other creations, the styling tweaks are quite subtle.

Most notably, the H1000 Last Stand models come equipped with a new carbon fiber rear spoiler, carbon front splitter, carbon side skirts, and a carbon rear diffuser. Hennessey will also offer both models with 20-inch alloy wheels available in either gloss black or graphite and distinctive graphics. Production of the Charger and Challenger will each be capped at 50 units and both models come with a plaque denoting its serial number.

“The Challenger and Charger are two of our most popular models, with monstrous horsepower in a comfortable and capable chassis,” John Hennessey said. “While it’s sad to see the 6.2-liter HEMI go, I’m pleased to commemorate its near-decade run with our unique ‘Last Stand’ models that pair the 1,000-horsepower output with the sleek look of carbon fiber and other exterior performance upfits.”

The H1000 Last Stand upgrades are only offered for 2021-2023 Charger and Challenger models and each comes with a 3-year / 36,000-mile warranty. Prices haven’t been announced.