the motors are made for much more economical reason than the previous years civics. if course you can still buy the simple I/H/E.
a good resource would just be to go to parts sites and look at whats available. it would get obvious quickly if there were no potential at all because there would be no engine performance parts for it.
start here:
www.modacar.com
and there is a site dedicated to your civic or ones that have your motor at least,
www.7thgencivic.com