lowAZhoe
Resident GM Tech
i just did wilwood 6 piston frt 4 piston rears on my wifes 08 denali. did the 14.25 instead of the 16". install wasnt too bad. gotta shave down the spindle to put the caliper bracket on. and make sure u order the wilwood brake lines. oem lines or oem replacement line will NOT work. when ordering brake lines u need a M12 inlet fitting for the front and and the rear is M10. i found this out the hard way, but made it work. the truck is metric and the line kits i ordered were standard, so i went and got standard fittings from auto zone (had to buy lines, just got the shortest ones) and cut the oem ones off and reflared the standard fittings on...PIMA but worth it