1. I think Iíve figured this thing out but wouldnít bet on it just think this is the way itís set up.
2. Itís by year maybe, if yours was dated Nov 01 and itís 02Q then the sequence is: 97K, 98L, 99M, 00N, 01P, 02Q (the ďOĒ is not used like the VIN because the confusion with zero). The books are printed a year beforeÖ
3. This sounds logical to me what do you think?
4. If you say your book list only the newer classes I wonder if they still apply to the older cars. Thatís why maybe you have the ATF argument as you have mentioned with old and new cars.
Your brothers in arms