by KR cams I'm guessing that means that they're cams taken from a KR engine which is a 1.8 16v as fitted to mk2 golf gti's and corrado's. If this is what they are then there is no benefit whatsoever in fitting them! what is quite common is when poeple have a 9A engined car (late 2.0L 16v corrados ect) that only has 130 odd bhp, then fitting a set of cams from an ABF (or KR, can't actually remember) will give a 20bhp gain taking power to 150bhp.