Looking for best place to buy a 727 TF and convertor for 1000+ hp Hemi build?

I am looking for recommendations on a transmission shop to buy a 727 TF for the car I'm building. It's a large cube KB aluminum Hemi (1000HP+ Hemi) that will be driven on the street and well as the 1/4 mile so it's needs to be able to take a beating. I'll need a convertor also so any recommendations on that would be nice. Thanks for any advice!