Thanks for the thoughts and I originally thought the same thing and was hesitant about having the backs machined but they do it on all of the 5 on 4.5 pattern wheels. Apparently they just machine the back before drilling the bolt pattern and then they don't drill the pattern as deep into the front of the wheel mounting flange. This way there is still plenty of metal between the lugs and hub. I really need the extra backspace on the rears so that the tire stays off of the wheel lip but it is the fronts I am wondering about. If I leave them at 4.25 inch of back space they will have the same offset as the rears and the track width should not change much over what it is now. I think the factory back space on the 14x5.5 inch rally wheels (wheels currently on the car) was 3.5 inches so that mean a 1/4 inch positive offset. Some one please correct me if I am wrong.