
This stuff gets confusing
15. STREET PREPARED CATEGORY
15.2 BODYWORK
C. Transverse members known as strut bars and suspension braces
may be added, removed, modifi ed, or substituted. They must be bolted
on. Strut bars must be attached to the strut/shock tower. Lower
suspension braces much be attached to the lower suspension pickup
point locations on the chassis within 2 inches in any direction of the
actual suspension attachment to the chassis. Except for standard
parts, no connections to other components are permitted. Additional
holes may be drilled for mounting bolts. Interior trim panels may be
modifi ed to allow installation of strut bars. Holes or slots may be no
larger than necessary and may serve no other purpose. This does
not permit any modifi cations to the frame or unibody beyond the allowed
mounting holes.
E. Longitudinal (fore-aft) subframe connectors (SFCs) are permitted
with the following restrictions:
1. They must only connect previously unconnected boxed frame rails
on unibody vehicles.
2. Each SFC must attach at no more than three points on the unibody
(e.g. front, rear, and one point in between such as a seat
mount brace or rocker box brace).
3. SFCs must be bolted or welded, but welding must be to the OE
subframe stampings, not to the fl oor pan in between.
4. No cutting of OE subframes or fl oorpan stampings is permitted.
Drilling is permitted for mounting bolts only.
5. No cross-car/lateral/triangulated connections directly between the
driver’s side and passenger’s side SFCs are permitted. Connections
to OE components such as tunnel braces or closure panels
via bolts are allowed and count as the third point of attachment.
No alteration to the OE components is permitted.
6. SFCs may not be used to attach other components (including but
not limited to torque arm front mounts or driveshaft loops) and
may serve no other purpose.