Need some info on 727 TF

My 727 last year had a cheetah rev. man. valve body and race clutch's in a all steel 67 dart with a 440 N/A motor it ran 10.90 know I'm putting a new motor in it's a 514ci with a PT-106 turbo and I am putting a turbo action cheetah trans brake in my 727 and I was told for the trans to hold up I should put a billet steel or billet alum. drum in , I will go with the steel drum as the car is 95% street driven with 5-10psi.

I see that I can get a stock billet steel drum for the stock size piston and a steel drum with a bigger piston can I get away with the stock billet steel drum or do I need the one with the bigger piston.

Thanks Mike