Anders I feel the same pain brother I would probably try to fine a documented a4 engine and keep the stock one for a resale, but on the other hand it's a valuable bit of early Alpina work just the way it is, but then again the 4 red stacks at full song would be the next best thing to sex! But on the other hand the car more than stands for it's self as is. I JUST DON"T KNOW i'm so confused, but in a good way