SCCA 2010 Solo Rules section 14.8.I.1:
I. Camber kits, also known as camber compensators, may be installed.
These kits consist of either adjustable length arms or arm mounts
that provide a lateral adjustment to the effective length of a control
arm. Alignment outside the factory specifi cations is allowed. The following
1. On double/unequal arm (e.g. wishbone, multi-link) suspensions,
only the upper arms OR lower arms may be modifi ed or replaced,
but not both. Non-integral longitudinal arms that primarily control
fore/aft wheel movement (e.g. trailing arm(s) or link(s) of a multilink
suspension) may not be replaced, changed, or modifi ed.