First of all, its not QG's original gear, its GA gear.
Second, you have to get the air cleaner box for proper engine function, it will cost you around 7-8k complete.
Third, you will have to replace your fuel tank to B14 one for a stable performance from fuel pump and fuel gauge.
Fourth, you need to put in some other meter to work properly with this engine's ECU as you will need to give VSS input from meter, which ECU requires.
Fifth, phans gaye ho lambe