I bought a set of Ed Miller C4-C5 caliper brackets so I could install my C5 Zo6 Rotors and Calipers. I was a little disappointed in the bracket. I could have made these myself but decied to buy them as his site said included all hardware and figured it would save me some running around as I don't stock Metric Fastners. The abutment brackets that mount to the spindle use a 14-2 mm bolt. Ed tapped the bracket for a 12mm bolt and then supplied 12-1.25mm bolts. Well needless to say that was a sloppy fit and I was not to happy so I drilled out the brackets to 9/16" then used the stock abutment bracket bolts from the C4 and bought four 14-2mm nuts. Then set everything up and tacked the nuts to the brackets. What should have taken me fifteen minutes ended up taking half a day by the time I ran into town...All in all it did turn out good. Here are few pics.