SurfHappiness

I've had a horrible time getting an engine fixed/replaced in my 2001 Audi A4. The warranty company would only provide an engine with a code that starts with "AUG" (this only comes on a '00 Passat; has 150hp. I don't think I need to specify that an '01 Audi A4 comes with an "AWM" (engine code) engine with 170 horsepower. I've finally got the warranty company to admit that the engine provided is incorrect. They are willing to "fix" their mistake by changing the head (which I'm not sure I'm comfortable with), or by offering me $1000. They claim that sum would cover the work that they would have to do to fix the engine. I have a feeling they are not being honest with me. I need to provide them with solid facts, what are the additional differences (other than a 3 vs. 4 valve) between the two engines, and the estimate to make this engine equivalent to what I bought. The warranty company claims there is no engine equivalent, currently available, to the one the car comes with. Any help would be appreciated!