Looking for links or info for interior parts for 97 grand am

I am looking for links or info regarding interior parts for my 97 grand am. Unfortunately the heater core went out a couple of months ago (of all things the original had a pvc head), so I purchased a new one and did a self install. What a pain in the behind. Well while installing I broke the cover for it. Now I have AC condensate coming into the car. It's pretty much ruined the carpet on the passenger side. I'm looking for some prices for this cover or links to such. Any help would be deeply appreciated. One other thing, is there no easy way to install the heater core. Any tricks that I may have overlooked. I've had it bypassed for a while now matter of fact pulled it again this morning because the new one acted like it was leaking so I'm going to take it to work and pressure test it. Thanks to all in advance. Please e-mail me at roy.gariepy@dorlastan.com or post to the forum.