I currently have a '72 k5 with 1/2 tone axles and 35" tires. I would like to put a 383 and lockers in it eventually (I think). I have purchased new yukon 4.88 gears and master install kits, but haven't installed them yet - partly because it is pricey to install them, but also because I know there is no turning back after that. I have been trying to convince myself that I will never need bigger than 35's partly because I am worried about doing major hacking, but truthfully I am not certain. I just came across a DRW D60 and Dually D70 out of a 1977 1 ton with 4.56 gears. The guy is selling them for just over $500, so I am pretty sure it is a good deal cause D60's usually go for a lot more than that. I am not too worried about changing wheels because I would sel my Mickey Thompsons and get some H1's, so at the end of the day, I shouldn't be out of pocket too much. I really have to think things out a lot before I spend money, but this sprang up, so I don't have the luxury of time. What do I do? Spend $500 to have the gears installed and stick with my current axles or buy the D60 and D70 with 4.56's for $500 and sell the gears I just bought as well as my half ton axles. I am a student, so I want to try to stretch my dollar, but I am worried that there are some big costs that I am not considering.