Catch:

I am not sure what life expectency you demand out of your parts (assuming your using OEM or second line), but the 100+ lbs of weight are not going to start breaking hubs etc. Since except for the 88 CRX Si body most of the cars weren't at minimum weight anyway. And the boxier and heavier Civic uses the same components.

I have run multiple enduros and sprints in a variety of CRX's and we do not have that kind of component failure with my heat treated hubs and rotors.

Perhaps if you keep track of the parts use hours you might have less failures.

Tom