hi Max
power output of the k series is dependent on which version you are using, there is a 130 bhp a 145 and the trophy 160 bhp, there is also the turbo version of the same engine found in the rover 75 with around 180 to 200 bhp
cvt is a descendent of the daf variomatic in principle, the daf was limited to low power figures by the rubber belts, times have moved on and they now use metal drive belts that will with stand a lot more but probably not 200 bhp
if you down load this it will explain how it all works
http://www.mediafire.com/?o32e6n2tx3r0a56
cheers Andy