si is pretty much the best model of crx out there. the only dohc vtec motors with those numbers you posted are the b16 engines (found in japanese si-r's), the zc fits in the crx but doesnt make as much horsepower, probably around 130, then there's the ls motor (b18b) which makes about the same as the zc maybe a little more, gsr (b18c1) which puts out about 170-180 and the type r motor (b18c5) which makes 190-200 horsepower. there's plenty of options out there, if you want to look at all the motors for hondas visit this site http://hmotorsonline.com