Good to see the pred holding up to the abuse of 24 hours of near consistent use. The preds of old would have needed their gearbox's rebuilding quite a few times over in that time.
Lowie, the mod looks like this I think mate
It looks like the screw is secured by taping the wishbone rather than a nut on the other side. Bit of a guess but I should imagine the rod is the 30mm ones used for the rear toe links.