I did that when I first did my SAS. However, I found with the stock backing plates and the wider FJ rotors that small rocks would get stuck between the backing plate and the rotor. It made one heck of a noise and it grooved the rotor. I cut the center ring out of the backing plate and cut the brackets off my IFS backing plates, straightened them out, drilled a hole in them. The top caliper bolt holds them in place and no more breaking the brake line loose when I service the front end.

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David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA

"Serenity through Sobriety"