Depends on which gen you're talking about. 5th gen civic has 1.3L, 1.5L and 1.6L. From memory
LX - 1.3L, sohc carbi, non color coded side mirrors, no techo.
DX (non-Vtec) - 1.5L, sohc carbi or F/I, color coded side mirrors, got techo.
DX (with Vtec) - 1.5L (tuned purely for econmy), sohc F/I, color coded side mirrors, got techo.
EX - 1.6L, sohc vtec (tuned for performance, well sorta), color coded side mirrors, got techo, higher redline.
Si - 1.6L, dohc vtec (also available is dohc non-vtec - ZC or D16a8) tuned for performance, color coded side mirrors, got techo, higher redline....
There are wheel size differences and exhausts as well but thats the mechanics of it...
Feel free to add or delete people.
