I'm getting around to finally being able to afford a lift for my 72, and was thinking about a 6" lift. The K5 has a 350/NP205/Turbo 375 with stock axles/gearing. I'm not going to be doing much serious wheeling, just a little mud now and again, so rubbing while flexing isn't really an issue. I was thinking about 35x12.50x15 BFG MTs on 15x10 wheels. Will this fit without rubbing on an onroad truck? Can I go any bigger on the tire size (again, without rubbing)? I absolutely love the lines on the 72 and I am not going to take the sawzall to it. Also, money is an issue on this project. Will going with blocks in the rear be a horrible idea? How bad would the ride be? It's already pretty horrible, lol. My final question is, on a 6" lift, would I have to do anything like change brake lines/pittman arm/change driveline angle/lower transfercase or swaybar? Any help would be appreciated.