6.0 Powerstroke tranny

[engineman02]

I need a new tranny on my 6.0, I have been running yalls extreme street tune in my truck and my tranny dont like it. Its slipping it ass off. I know yall use NADP and Suncoast trannys for yalls race trucks. I want to get a tranny that I dont have to worry about it breaking...I know all mechanical things break, hell I work on diesel engines etc. But what I am gettting at is I want a bad ass tranny that can take a huge amount of power for assurance. Can I get one from yall or do I have to deal directly with the manufacturer? Lmk something soon I really want to know what my opitions are and how much i have to spend, thanks.