Well see, 1 it's my road car, but to see if it's worth the trouble I wonder how much it would change my 1/4 mile. 2 my options are limited - if I want to maintain ABS and pay only a few hundred dollars for the diff my only choices are 2.24 (no thanks), 2.47 (in the car), and 2.88. If I'm willing to ditch the ABS (I'm not) that opens me to 3.07 and 3.46. Otherwise, I can maintain my ABS, and get whatever gearing I want...for $3500. This, ladies and gentlemen, is why I don't recommended making an old Mercedes your project road car.