The gearing selection to be between 4.10 – 4.33 with 4.56 as the top based on recommendations to stay at 33” tires. Based on his and others currently running this setup the 5.2L magnum from a 2001- preferably from a 4X4 with a NV3500 5 speed will be the donor. I have contacted Evan Backwoods Off road, Very helpful and highly recommended by all that I have contacted concerning his products. Thanks for all of the info and here's what I have found / decided so far.