So yesterday I bought a used Vortech kit with low miles at a pretty dam good price. The catch was the majority of the nuts, bolts, and washers were missing (no biggie all the major brackets and parts werent missing). I checked the Vortech website and noticed that they sell Hardware kits for the mustang guys. Its basically all the nuts, bolts and washers for their supercharger kits.
Problem was that they didnt have a hardware kit for the FRS/BRZ. My guess is that since the kit is still relatively new there aren't enough second hand owners to drive up a demand for a hardware kit. Thats probably why most of the hardware kits they have are for the mustang guys.
After pm'ing Brian and talking with Ernie its looks like sometime next week there will be a new part number from Vortech for a hardware kit for the 86 as well.