I have a 2002 A4 3.0 6 speed manual Quattro with a bad engine and have found a 2002 A6 3.0 front wheel drive with good(I hope)engine for sale. The sale motor car had a bad transmission and the owner couldn't find one, decided to scrap the car and sell the engine. Thus I have no real idea of the condition of the car and am relying on the seller to vouch that the engine is good. My question, though, will the 3.0 from this front wheel drive auto be compatible with my A4 manual quattro? Will it "fit" regarding mounting/bolt patterns, etc without any modification. The seller seems to think so but of course he's trying to sell whether it works for me or not lol! Any info is much appreciated.