the sir is the equivalent to the usdm si, all the canuck civics are listed as a model higher than what their us counterparts are for the same car. and the canucks got a few extra options like on some ek hatches you could get the mirrors/door handles/side moudling/ license plate piece and all that stuff body color as well which was cool, and black interiors are options up there, the preludes had some nice extra options too.