Hi there,
for the valve stem seals the head has to come off and you may also have worn valve guides, the water pump & timing belt may be replaced as well and as for the other oil leaks you will have to get the engine washed and assessed as there are a number of placed that the oil can be coming from, these Jobs cant be estimated as there are to many variables, involved.
Mark (mhpautos)
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Sunday, August 31st, 2008 AT 9:58 PM