At what point must you swap out your NP208 for something stronger? 37" tires? 44's? When you need to go to the doubbler? I'm going 1-ton soon, and am going to need new driveshafts. Is a NP205 the only way to go? I never hear of anyone breaking their NP208 on here....can someone enlighten me? Do I have to figgure a T/C swap into the picture?