Elmo_x: 2.0 cc is for the remote control car.
1997 cc for most Mitsu 2.0-litre engine, 4G63, 6A12 as example.
4G93 is 1834 cc, rounded to 1.8-litre category, similarly for 4G67 is 1836 cc (I think, correct me if I'm wrong), 2 cc up.
4G15 is 1468 cc, rounded to 1.5-litre category.
et cetera.
hehehe.. SR20DE/VE/DET is 1998 cc lah Unker Miton, only 1 cc above 4G63...tee hee..