Stuart,
BD power built my trans(it was a package with valve body, clutches, torque converter, pan etc, 5 years ago and it has put up with my hp and torque without a whimper, and still is insanely strong. Electrical gremlins are at fault here, not the trans at all. Build your 47re, you will be happy. Mine has been great and I am not happy having to pull it out, but my truck has to be reliable, it makes me money. I will keep you guys posted as I have received a lot of help here!
BD power built my trans(it was a package with valve body, clutches, torque converter, pan etc, 5 years ago and it has put up with my hp and torque without a whimper, and still is insanely strong. Electrical gremlins are at fault here, not the trans at all. Build your 47re, you will be happy. Mine has been great and I am not happy having to pull it out, but my truck has to be reliable, it makes me money. I will keep you guys posted as I have received a lot of help here!