I have a conversion V8 E 190. it is a 1987 and I want to swap the rear axel to the best choice for Mercedes benz that will swap. So the first question is what gear ratios are available? And two what complete rear assembly carrier axels crossmember complete will bolt in a 1987 E 190 the car had a 2.3 in it but has been converted to a 5.0 ford. I need to drop axel ratio to at or near 2.5 to 3.0 range. Can any body steer me in the correct direction. Also keeping in mind service life so the heavier duty the better. The engine produces 350 Hp and makes 380 Ft,lbs. torque