Here are their specifications:

2016 Spania GTA Spano
Engine: 8.0L Twin-Turbocharged Odd-Viper V10
Power: 912 bhp
Torque: 844 lb.ft
Weight: 1450 kg
Transmission: 7-Speed CIMA Sequential
Drivetrain: RWD


2011 Koenigsegg Agera
Engine: 5.0L Twin-Turbocharged V8
Power: 946 bhp
Torque: 811 lb.ft
Weight: 1435 kg
Transmission: 7-Speed Dual-Clutch with One Input Shaft
Drivetrain: RWD


2016 Zenvo ST1
Engine: 6.8L Twin-Charged V8
Power: 1086 bhp
Torque: 1054 lb.ft
Weight: 1789 kg
Transmission: 7-Speed Paddle shift
Drivetrain: RWD


Thanks to both ZemFlo and Furkan for their great support!