My 2013 Carrera S that had a bad misfire P300, P304-6 and p13a2 error codes. I took it to the dealer, he checked the spark plugs and the coil pack swapped them around issue remained on bank #2. They are now going to likely change 1-2 fuel injectors. Appears new part is for $310, what kind of labor am i looking at in CA?
Does it require dropping the engine a few inches and taking the manifold off? How many hours of labor should I expect? Could this be bc my drives are 2 miles to work in each direction and that I dont drive more than 2500 miles in the past year?

Looking for your input. Thanks all.