ok, so I've done a little searching around and I'm trying to fit a set of 42/14/17 iroks on my truck... I'm THINKING that I can do it with an 8" lift and maybe a little trimming. any sugestions? also, I'm trying to find out what my rear end is... I know it's a 14 bolt, but I don't know if it's a full floater, or a 10.5 or whatnot... I'm pretty new to the 4wd world, so I'm not really sure what to look for to find out... I went on summit racings website, and from what I can tell I've got the 10.5 but I don't know... it's a 1987 GMC V3500... other than that I don't really know a whole lot about it.. it came with a manual transmission, and thats about all I know..dana 60 front end, I'm also kind of trying to figure out what gears are in it, is there any way of knowing? thanks for the help guys!!