You'd be surprised mate, if as you say your not that mechanically minded I take it you'll have a garage fit the cams? Price up all the parts needed to do it properly, the labour charges and mapping, then compare it to a stage 1 charger kit, which is really easy to fit as it really does just bolt on Then compare the gains v's cash spent!!! When I realised I binned my N/A plans and sold the cams and that and bought a charger setup The only thing im concerned about is 250 Bhp going through the front tyres, very good in the dry at while at speed im guessing but is not poor from standstill or the