The kit I have calls for 79/85 SAF stuff. I already had the vented rotors for the front and my front axle is not quite ready for assembly so I bought the calipers and started to install the FROR kit. The calipers are not floating so my concern is that when the pads wear down the pistons could over extend and cause problems. I know it was overkill but I already had the 4 rotors all I needed was the calipers. I was told all IFS calipers are the same minus V6/4 cyl. My goal was to then run the FJ master cylinder which should have made the brake bias OK? Thanks. Jim