Tommyroc is correct, you change the offset and the bearing life goes way down. A jeep is 1/2 the weight and the 4 wheel drive system uses a much bigger bearing and doesn't take the corner stress that a mustang does.
Ask anyone that puts deep dish on a old impala or deep wheels on a Honda. How many bearings or CV they changed.
The bearing with correct offset rides with the weight in the middle of the bearing, When you move the wheel out the weight transfers from the middle to inside bottom and outside top of the bearing, The bearing is in the same spot just the weight load is transferred to a different location. The bearing rollers are about 3/8 inch long, when the weight is transferred to the inside and outside then that would mean that the weight of the car is not on a 3/8 inch surface but on a 1/8 inch surface, you can see that this would be excess weight on a small area and would cause the bearing life to be shortened.
It's your car, do it if you think it will work.
Ron