Hi, I made that race with a FS.
the best french FS driver (Héligoin) setup the car this way, so most of FS owners (including me
) took that route.
I don't have tried yet the FS with the shocks on the usual side (it was my first race with it) but I used that trick several times on my B44. Having the shocks behind the rear wheels really helps with handling on rough tracks. The rear stays planted on ruts and slippy parts, to the point that the car can become a bit understeery. Try it, it really works.