My 94' C280 had engine problem about a month ago. The problem was that 2 cyclinders had no ignition and the control unit should be replaced as well as the coils. My question is that I found the Nos. printed on the used unit is not exactly the same as the original one. The original one is 016 545 78 32 (07) while the other one is 017 545 71 32 (02). I just want to know if this replacement is OK or not.