I hear you man. When I got the car I decided I didn't want anything else but the OEM kit. It has taken me 2.5 years to find a rear lip, and side underspoilers (Taffeta White and need to get painted). I don't know if I'll ever find a front...sad.
I almost gave up but then saw this guy's photos and decided I had to press on. I"ll never understand why they didn't have more left over, most people didn't buy 98-00 cars with the OEM kit installed.