I have the upgraded subframe and used 13/16" (.812") Energy Suspension bushings and brackets for the BAT 21 mm sway bar. I got the larger of the two brackets they make and the bushings had to be modified. I had to bore out one end of each bushing about 1/4" deep using an 1 1/16" drill for clearance to fit the bars locating tab on each side. What a pain, should have bought the bushings/brackets from Prothane.
If you have the stock Ford bracket just get another BAT one.
