Welcome to the world of Hypersport Motorworks. Here we have 7 heavily modified variants of the Barstow, 3 new engines, 2 transmissions, ESC and 2 AWD transfercases.
7.0 liter V8 with twin-turbo and supercharged variants both making over 1000 HP.
8.3 liter V10 making over 1000 HP naturally aspirated.
7.1 liter I6 turbo diesel making over 1500 ft-lbs and 800 HP.
6-speed DCT and 6-speed manual with 2 AWD transfercases.
Race AWD transfercases with a LSD.
Off-road AWD locked transfercase with locking differentials.
I have also taken a lot of weight out of the engines and transmissions, they are now about 75% lighter.
The Hypersport RoadKing:
A track ready hypercar with 3 engine choices all making over 1000 HP. Plus AWD, ESC, 18 inch rims with race tires, and race suspension. The RoadKing can do 0-60mph in about 3 seconds or less and will do well over 200mph. Thanks to the ESC, AWD and grippy race tires it puts the power down extremely well. This is much faster than any vanilla car in BeamNG.drive both in a straight line and around a track.
3 Roadking variants
The Hypersport DuneMaster:
The DuneMaster is a trophy truck type off-road vehicle with the same engine and transmission options as the RoadKing. It includes custom off-road suspension, a locking AWD transfercase, and locking differentials. The DuneMaster can do it all, rally racing, rockcrawling, mudding, and its specialty desert racing.
3 DuneMaster variants
Just for fun:
The zombie apocalypse variant equipped with a 7.1 liter turbo diesel and a manual transmission. It has all of the same gear as the DuneMaster just with a more "rustic" appearance.
Huge thanks to @thatguy47 for helping me work out the AWD system.