I pulled my A/C suitcase last summer. I then layed the suitcase, firewall side down, on a piece of sheet metal. I drew around it with a Sharpie and marked the bolt holes. I used a pair of tin snips to cut it out and presto, custom A/C hole cover. I used some caulk on the firwall just outside of each big hole. After a little massaging to get it right it really doesn't look half bad. When I pull the engine I will most likely scuff it a little and paint it with the rest of the engine bay. It's not factory but hey, it didn't hardly cost me anything.
