I had Mike put in a suncoast IV a few months ago in my truck and we went with the 1058 to help get my truck up and rolling. Anyways I have always ran a 500 RWHP tune in my truck and it has seemed fine. I have always planned on going with twins and now that there almost out for the LMM I am going to purchase a set. What I was wondering is if the 1058 is going to be to loose, and get overpowered. I really would hate to have to buy another torque converter.