I'm about to order the bolt-on coil over kit next month. I have been back and forth on tire sizes for the last few months. Originally I ordered 35" trail grapplers, thinking about all the issues with the stock axles/lockers. Then a buddy who works at my local Discount told me they had a customer walk away from 37" trail grapplers. He cancelled my order and gave me a deal on the 37's I couldn't pass up. Along with the lift install I'm adding EVO gussets, 10 factory axle shafts, Dynatrac Prosteers, and JE Reel 1350 f/r driveshafts...so I was going to wing it with the factory D44 for now.
The 37's have been stacked at my shop waiting, and a co-worker wants to buy them from me for what I paid to put on his diesel. Now I'm back to worrying about my stock lockers and thinking of ordering the 35's again lol!