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There was an (OEM) Aero Kit available through Acura dealers from 2003 on. The 2003 kit will fit 2001-2003 EL's, but the 2004 model had some cosmetic changes to the bumpers and rocker panels (among other changes), so a 2004/2005 Aero Kit will only fit those model years. FYI, fog lights were not part of a package for 04/05 models, they were standard equipment, and would not fit on 01-03 models, as the bumpers are completely different. The Aero Kits were strictly front, rear and side skirts (not bumpers), and rear wing spoiler.
You can buy an aftermarket 01-03 Civic body kit, but the front bumper will require some modification (depending on the kit, this may sound easier than it is) to fit the centre hood and bumper crease of the EL, whereas the Civic had no centre crease.