I am about to to pick up a cherry 03 convertible with a 2.0 motor. The timming belt broke and trashed all the valves and who knows what else. I'm checking on parts and possibly a used motor and I keep seeing that the vert motor is different. If so, what is different about it? Can I use a motor or cylinder head from another 2.0 equipped VW, or does it have to be a convertible?