mostly, kabuli available stock is g15, only a few are g16...
being a user of g16b in 1.6Gti, the engine is strong, can take a lot of beating, its really quick, i have beaten almost every car of it era except civic, which has VTEC advantage.
it has a few lesser sensors as compared to g13, both notorious crank and cam sensors are missing, as it has disti so ecu takes signal from disti..
being bigger displacement, fuel consumption is not as good as g13 within city, however on motorway it gets better than g13
original 1.6gti has vented brakes to take care of bigger engine. Also suspension parts are a bit beefed up, however g13 part also do fit in but structs and springs are stronger in comparison..
works on its own ECU