For the fronts, the purpose of running Slicks is to take advantage of the bias ply sidewall. With a big brake kit you must use 17" rims, this leaves you with a requirement of low profile tires which you wont find works with a true slick. you need to run 14" or 15" to use a slick. 16" will work but your selection of slicks is cut down by more than half.

For the rear which is what you asked about. The rear conversion requires the backing plates which house the parkign brake assy ad cables ect. you acquire this rear plate assy with the conversion. the Big brake kit like the AEM only comes with rotors and bracket spacers. So you see, you need to do the conversion then add the big brake kit.

Terry