GM Ecotec engines in STL
#30247 from Tim DeRonne · Rule change · TB 21-03 (2021-03 Fastrack)
In STL, Table B, change GM Ecotech LNF, as follows:
"GM Ecotech LNF"
In STL, Table B, GM Ecotech LNF, add to Notes as follows:
"Any combination of GM Ecotech engine family permitted. Must use 55mm flat plate restrictor. Must meet all other STL
specifications."