What's a good sprag for TF 727

With that much power and no low band apply I'd go with a super sprague, either the A&A brand or Coan is fine. It's too easy to make a mistake and feet and legs are important parts of the body not to run one

my trans builder told me that w/ low band apply in a fully auto., one doesn`t need the super sprag. he set mine up that way. does this sound correct? I had a trans explosion once, don`t
want another !!