\'88-up PU owners Some general AND specific questions for any of you that own these trucks. (88-02 I guess now!) What year were rear disks first offered on the 1/2 tons? Has the rear axle ring gear diameter changed? I noticed the other day a couple of trucks that had what appeared to be 8.5" diffs, but the lower "triangles" on either lower side of the center section were different a bit. (not 7.5" vs 8.5", part of the "triangle" was missing on these) What I'm trying to do though is find out if the rear axle flange has changed since '91. If it hasn't, I'm suspecting the newer 1/2 ton rear disks to be a straight retrofit, but I don't know anyone that has one of these trucks with rear disks, so I can't compare. What I *really* would like someone to do is compare two trucks with 10 bolts (81-91 vs 88-up w/disks) side by side, to see if the backing plate bolt pattern and/or flange is the same or changed. I am pretty sure you can see this from underneath the vehicle, with nothing taken apart. Even a digital picture of the disk rear brake vehicle flange from underneath would probably get me started... Thanks! Dorian My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a> Why insist on counting when the ring gear has the tooth counts stamped in?