hi there im kristina... i have a 93 audi 90s... trying to rebuild it. its fun and frusterating all at the same time... many trips to the junk yard , but at least there is one other one in there. They crushed the first one is was using as my part car my biggest problem is no one makes a book for this car so as far as timing and specs are concerned well im in the dark. Ive talked to the dealers and they gave me the head bolt specs but told me i need a book they cant help me with the other specs. anyone have a book or suggestions on what i can do?