rearend abody

By hassle I mean I just want to swap out the gears with no welding or axle cutting. I just put in a brand new drive shaft and do not want it cut! I hate the single tire spin I want to be able to have both tires hook up! The 4 in bolt pattern axles on it now are terrible!
Unless you know how to properly set up a gear set (pinion depth and drag, backlash, gear mesh pattern and the like) there is no "swapping out gears". in any rear end. You will need some special tools, equipment,parts, and know how.