The basic problem was overheating and a mobile mechanic had removed the complete cylinder head for servicing. Unfortunately our relationship had ended but he did not return it. Although the case is pending in court, at this point I am not sure whether I can get that part back or not. So I would like to ask you to quote on the following: 1. Assume that I can get the complete cylinder head back. Please quote on installation costs. To install it, I think that the following items will be needed: Head bolts Head gasket Water pump Thermostat Oil Plugs No need for cambelt and tensioner since the existing ones are almost new. 2. Assume that I cannot get the complete cylinder head back. In this case , you need to supply a second-hand complete cylinder head. for an engine G4HG. Please quote for the complete second hand cylinder head and its installation costs as above.