I went to Cottmann Transmission with a 1996 Ford f-250... It needed a complete rebuild... I offered to pay an ADITIONAL $500 for upgraded parts to have a stronger more durable Trans... The Transmission lasted about 15 months... with less than 18, 000 miles... DEAN the jerk that runs the place would not warranty it buy saying I only got his basic trans service with a 1 yr warranty... and wanted me to pay for the parts AGAIN and he would do the labor... The main problem with that is I already paid for the parts and he never even installed ANY upgraded parts... If he did I would have had FORDS NEW VERSION PUMP... which is what failed... and The old pump was still in my Trans when it was taken out by someone else!!!