I have a 1997 528i. Manufacture date, 07 of 97. I neeed to put a transmission in it. Found one from a 1999 (Maunfacture date, 09 of 99) 323i with 15k on it, torque converter included for $300 from a part out. Same model number transmission, A4S 310R. The dealer tells me it is not compatible, but it's the same model transmission, 4 speed, same M52 motor, same fluid capacity, will bolt right up, looks identicle. What risk is involved here? Is there an electrical issue I may run into? If no one convinces me that it will work, I am just going to have mine rebuilt, but thought I would try this first.