I put the ford racing ring and pinion in the 94, when I re did the 98's I went with richmond; I noticed that the richmond set was a little louder until it was broken in. Just so there is no confusion, there is really no break in for gears, just heat cycling, I heat cycled the richmond for a week, changed the diff oil to synthetic, and it was smooth as silk, perfect wear, and quiet. Then my brother's GF totalled the car.......