The 2020 Ford Mustang Shelby GT500 isn’t a slouch as its supercharged 5.2-liter V8 engine produces an impressive 760 hp (567 kW / 771 PS) and 625 lb-ft (846 Nm) of torque.

That’s nothing to sneeze at, but Hennessey is taking things up a notch as they have announced three performance packages for the upcoming muscle car.

The base model is called the Venom 850 and, as the name suggests, it features an upgraded engine that produces 850 hp (634 kW / 862 PS) and 725 lb-ft (982 Nm) of torque. This is possible due to the use of a new supercharger, high-flow catalytic converters, a high-flow air induction system and stainless steel long tube headers.

The car also features a host of minor styling changes including embroidered headrests, exterior badges and an individually numbered dash plaque signed by John Hennessey.

Also Read: 2020 Ford Shelby GT500 Is The Fastest, Most Powerful Mustang Ever

Sitting in the middle is the Venom 1000 which produces 1000 hp (746 kW / 1014 PS) and 850 lb-ft (1151 Nm) of torque. It builds on the entry-level model by adding a 3.0-liter supercharger, an upgraded fuel system and an improved intercooler. The car also has undisclosed transmission upgrades. On the downside, the 3 year / 36,000 mile warranty drops to a 1 year / 12,000 mile warranty.

The range-topping Venom 1200 produces 1200 hp (895 kW / 1217 PS) and 1000 lb-ft (1354 Nm) of torque. The changes to this model are pretty extensive as the 5.2-liter V8 engine eschews the supercharger for a new twin-turbo setup. The engine has also been outfitted with new pistons and rods.

Like the Venom 1000, the Venom 1200 has an upgraded fuel system, an improved intercooler and a beefier transmission. There’s also a new stainless steel exhaust and a high-flow air induction system.

There’s no word on how much the cars will cost, but the standard Shelby GT500 will arrive at dealerships this fall and reportedly be priced from $70,300 – excluding a $1,095 destination and delivery fee as well as a $2,600 gas guzzler tax.