Hi,

I've noticed there are 2 sizes of rear upright blocks (the part that bolts onto the upright and that the steering arm bolts onto) for the rear uprights of VD RF98+ cars. One is much bigger and taller than the other. I'm guessing there is a difference in roll centres between the 2. Does anyone know exactly what these do? Why might you run instead of the other etc.?

Cheers,

Hamish