SSM allows any modifications from Stock, Street Touring and Street Prepared. Picking and choosing between the allowances is permitted. There are also additional modifications permitted such as engine swaps (same manufacturer as engine block) and suspension components are unrestricted (as long as they use original attachment points).
The only major reason I can't run my car in SSM is because of the fieroguru lateral link relocation brackets I'm using to correct the rear camber curve and raise the roll center on the '88 rear suspension.
In SSM, moving the factory pivot points is explicitly not allowed. The subframe also cannot be relocated.
This leaves a few obvious options:
* Find a way to run an absurd amount of static negative camber, sacrificing straight-line acceleration
* Move the strut top inward as far as possible
* Limit roll with springs and swaybars
From Street Touring (14.8.C)
It would take ~3" of lateral movement at the strut top to achieve the same camber curve improvement as the 1.5" lateral link drop brackets. Even with a carefully designed camber plate, it wouldn't be possible to achieve that much movement while still complying with "The center clearance hole may not be modified".The following allowances apply to strut-type suspensions. Adjustable
camber plates may be installed at the top of the strut and the original
upper mounting holes may be slotted. The drilling of holes in order to
perform the installation is permitted. The center clearance hole may
not be modified. Any type of bearing or bushing may be used in the
adjustable camber plate attachment to the strut. The installation may
incorporate an alternate upper spring perch/seat and/or mounting
block (bearing mount). Any ride height change resulting from installation
of camber plates is allowed. Caster changes resulting from the
use of camber plates are permitted.
(14.8.I) of Street Touring also provides a relevant allowance:
However, I don't see how the strut angle could be increased by redesigning the strut mount bracket on an '88 Fiero.On strut-equipped cars, the strut’s lower integral mounting bracket,
for attachment to the upright or spindle, is unrestricted provided it attaches
to the standard location. Any resulting change to the position
of the strut centerline is allowed. Such brackets shall serve no other
purpose. This does not allow for changes to the integral steering arm
on cars that have the steering arm integrated with the strut body.