We took our XC to Florida for Spring Break and it ended up in a shop in Jacksonville. Gabriel the owner of Autobahn of Jacksonville hooked it up to Vida and it revealed a misfire in Cylinder 4. Compression test has it at 30 psi and leak down test revealed an exhaust valve leak. The engine has 251k miles and we are opting to change the entire engine rather than doing a head job. What is the going rate for parts and labor to complete this job? He is suppose to call me Monday to give me a quote. I just want to be prepared for the upcoming wallet buster.