A certain tuner i went too, who was supposed to be very good, and recently had his blue saph in Fast ford, quoted me 3000pound to build me a 250 bhp engine, when i asked how he was going to achieve this, he told me with a standard engine with lower compression pistons and 25psi of boost up its arse(direct quote),which we all know a standard head wont flow, i asked him to put everything in writing so we both know where we stood, he wouldnt do it. When i asked him about reliabilty he said, well its only your weekend car he then went on to leave a clutch bolt in my head which smashed my injectors and bent my valves in less than 300 miles on a 2700 pound engine