There's a difference between someone who can change oil vs bore out cylinders, install a new ecm, change the crankshaft and pistons, change the fuel pump, pushr

There's a difference between someone who can change oil vs bore out cylinders, install a new ecm, change the crankshaft and pistons, change the fuel pump, pushrods and camshaft. You aren't a mechanic because you know how to change oil, you're a mechanic because you know everything else.