I appreciate some of these replies and the helpful advice and I have indeed had my question answered. Forums are here for those who have the knowledge to share and those without to gain, surely we can do without the sarcasm? I am a 22 year old student so don't have vast disposable income, maybe I could have worded my initial question slightly better to ask if the Turner price was fair and the expected for a job of this type. I index linked what my father paid Turner 15 years ago and its a similar sum to what is quoted today, so come monday I will be packaging the head for shipping to Turner Engineering.