Foxbody-SN95 brake conversation issue

I believe they supply a few washers to use as shims with the caliper bracket kit. I did not need any with mine, but not uncommon to hear of shims being needed

What you should do is use two lug nuts and a washer to clamp the rotor to the axle snugly. Disassemble the caliper to the point you only have the pad retention bracket, and no pads. With just he bracket, slip it over the rotor and bolt it down. The rotor should spin freely in the channel without contacting either side of the channel for the bracket. Depending on how worn your limited slip is, there might be some in and out axle play. Grab the rotor and pull outwards, and recheck clearance. Push the rotor inward and recheck. If there is no contact, you are good to go. If there is, use a washer to space the bracket out slightly and recheck everything.

You might have to go to good hardware store or somewhere like Mcmaster-carr to order washers of varying thicknesses to use as a spacer. Home depo tends to not have as good of a variety.

One of my gripes about the NRC kit is that there were no install instructions with the kit. Granted, i did not need them, but there could be some setup tips, like the above, included somewhere.