Rear setup for FS

[Windy]

Guys

Few questions on the rear setup on FS. Got all most of the sets from Petit RC and are struggling to make head nor tail of how it all works with the antisquat.

Was wondering what everyone is running? and also some help in what c in or out is etc? What are they also running on the front?

Put in a 7.5 what sort of pinion should i be running?

Many thanks for any help on these queries.

Windy