Quote Originally Posted by JS154 View Post
The S52 is 3152cc.

The S54 is 3246cc, which makes the whole concern moot. The S54 is too large for STU, even if 3.2L becomes the rule for 2012.
Nope, it's still a 3.2 as per the STCS:

I
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Weights and Engine Allowances

Minimum weights for cars with normally aspirated piston engines will
be determined by 1.1 lbs/cc displacement for the installed engine (see
following table). Displacement is the factory displacement for the installed
engine. For
the purpose of weight assign ment, engine displacement will
be rounded to the nearest 100cc (e.g., 2150cc = 2200cc and 2149cc

= 2100cc).