If I were to get a 1500 Elevation with the Max tow package which brings the tow capacity to ~13,000 and then after market add a 2" lift kit to get the extra clearance to get closer to the AT4/AT4X. Is there any way to estimate the tow capacity of making this upgrade to an Elevation? Does it just bring it back down closer to an AT4/AT4X and I should just get the AT4/AT4X. I ask this because GMC is not willing to offer the AT4/AT4X with the max tow package.