Im thinking about putting a spool in the Dana 60 im gonna swap in soon but I dont know much about them really. They just eliminate the spider gears dont they? I dont wheel my truck too hard just occasionally, and its my daily driver. Probably the hardest thing I do with it is pull logs for firewood in the winter which is really the whole reason I want the front end locked anyway. I just want something reliable but id rather not spend $500 on a locker. Do spools hold up very well? Are they hard to install? How are they different from a Detroit locker exactly?