Thanks David, I should’ve been more clear. I don’t think the 12 mm holes had enough OEM slop to allow the larger bolts without them being enlarged. A simple ten second task with a half inch drill bit chucked into a cordless drill; and a lazy and ill advised action that will forever plague and perplex future owners until it is returned to OEM dimensions.
as for the bushings being from Dennis Quella I agree (not the now-defunct Precision Proformance run by the late Bob Byars). Dennis is the only vendor I am aware of that has the hexagonal center section.
Larry