Gosh, I was looking for photos of my Pacer caliper rebuilds I did a few years ago, Now I sure think the single piston versions are very DIY friendly and the seal & Oring kits are very affordable, seating the seal and installing the piston past its installed o-ring with out injuring the Oring are but a few of the details I can vaguely remember. I can not remember if I had to polish the bore ever so slightly, new bleeder screw, new mounting bolts and slider o-rings and a splash of black paint, etc.