My o2 Sensors are trashed after 70,000 miles. I was told by my tuner to purchase only the ford o2 sensors. Well I went to Ford and there price was $94 per side. Thats alot of greenbacks. I went to Advanced auto and the Bosch cost $43 per side, and the Denso's cost $53 per side. Will the Bosch be ok, or should I drop the extra coin for the FoMoCo sensors.:??::??::??: Thanks.:beer::beer::beer: