I also remeber reading somewhere that the FQ6501B has a Nissan derived 3.0 Inline 6 but I cant remeber the model number of the engine design.
Here are the specs on the engine from the website...
Item Unit Data
Engine type BN6V87QE
Rated power kw（r/min) 118（5200）
Max.torque N.m（r/min） 248（3400-3600）
Displacement ml 2960
The other version (FQ6501A) comes with a common Mitsubishi 4G64 92 kilowatt engine.
This is what it says about the transmission...
Transmission Manufacturer Beijing Gearbox Factory
Type BorgWaner T5-B1
The BorgWarner T5 is one of the best transmissions ever made!
Acceleration is a bummer though, "under the testing condition and the acceleration to 100 km/h takes 25 seconds."