I have a '01 with a A/T and I can't seem to power brake the thing. The stock transmission had about 170k miles on it so I thought maybe it was time for a rebuild. I had a local shop rebuild the unit trans and install a HD torque convertor and a shift kit in the valve body. After all that money I still can't smoke like all my brethern. Even with my Hypertech on stage 3 the truck will climb to around 2k RPM and just sit there when I try to power brake it. Any ideas??????