I have a 2014 Chevy Cruze Lt 1.4 and didnt realize the crap pvc design and lost my non return valve about 10-15k miles ago. Now my Valve cover, Intake manifold, pvc return hose, catalytic converter and both up and downstream O2 sensors. Ive bought all the parts already and having a buddy from high school that works for a dealership but has a shop on the side that he has. So Im trying to figure out how much is a fair price to offer on labor for all that work. According to the dealership its about 6.5 hours of labor but I have no idea if thats a fair assessment of labor hours or what to offer without being insulting. Any thoughts?