Ok, here goes (I think)
To go to the FS2 you need the wide mounts (either plastic or LAW36/37 set wide .. Bout and Fout being the kit standard).
LA272 wishbones (or Um521 ... NOT LA255, UM503 etc.)
65.5mm dogbones AND the short axles that don't use a spacer
The UM519-1 plastic hubs or the UM516-0 aluminium hubs
That will get you to FS2 spec.
If your FS was converted from an SP or earlier car you can not use the plastic hinge pin mounts as they are too narrow, only genuine FS plastic parts or the LAW36/37 aluminium wones can be used.
I found that going from FS to FS2 required a very different setup on the front end of the car such is the extent of the change at the rear end ... adding the big bores made another set change in geometry at both ends of the car.
The results though I have to say are simply out of this world. Too good to be true? Not in this case ... believe guys .. believe
