BMW E36 M3 Canadian (North American) S50B32 engine
#31866 from Ryan Hameetman · Rule change · TB 22-04 (2022-04 Fastrack)
In STU Spec Lines, BMW S50B32 Euro, classify as follows:
STU Maximum Displacement (cc's) Minimum Weight Notes
BMW S50B32 Euro 3201 3300 Engines are permitted 0.040 overbore, 0.5
point increase in compression. Engines
must use the OEM camshaft. Engine must
use stock intake plenum.