I don't know if they make one specifically to replace the torqueshift, but if there is another tougher tranny out there that fits the 6.0, my personal choice would be to go with that, but if there isn't another option to replace the tranny, I'd still look into building up a stock one to put in to prevent any future problems. We had an '01 that had problems with the automatic transmission. We were just going to have it fixed back up to stock until we looked into it and found out that having the stocker built up with a stronger torque converter among other things (I can't remember what all we got. so long ago and so many rebuilders later ) and even adding a shift kit while they were working on it worked out to be about the same cost. I know that's a whole 'nother animal being a 7.3, but just saying it'd be worth the time to really shop around to find out all your options.