Here they are. the gap between the bracket to receive the spherical bearing is 1/2″, and the width of the bolt is 7.9mm, and there’s a few spherical bearings that nicely fit in here. What bugs me isn’t the price of this (£56 per bracket) but the fact that they have been used. I wasn’t expecting to buy used when they’re advertised as new.

These brackets are a great option to receive the wishbones and of course can be height adjustable.