I guess the real value in these is an extra half degree of neg camber and you'd still be eligeable to run in D-Stock Solo
per the 2013 rule book
Quote:
If offered by the manufacturer for a particular model and year, the
use of shims, special bolts, removal of material to enlarge mounting
holes, and similar methods are allowed and the resulting alignment
settings are permitted even if outside the normal specification or
range of specifications recommended by the manufacturer.
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depending on how competitive you are, $400 might be a bargain
