and my mate build vw track cars etc and he said to put kr cams in the abf a nice full system decent air in-take and a chip u will see 170-175bhp easy with loads of fun 
Being blunt, your mate is an idiot.

It he'd bothered measuring the Cams, he'd know that ABF cams are more aggressive than KR cams...so fitting KR Cams will be de-tuning.
A full system won't give you any power gains on an otherwise standard engine.
With all those mods, you'll struggle to see a genuine 175 BHP...it took me all those mods + a fully re-worked big valve head to get 175 proper horsepower.
That's on a standard manifold & downpipes and running a Cat.
You'd be VERY lucky to get 175BHP on a set of 268 cams without headwork, never mind KR cams and exhaust/chip/filter.