It is difficult to give you a direct answer, since the parts appear to be shrinking almost daily. The best bet is to check with the local Pontiac dealer or do a part number search on gmpartsdirect.com. Someone on the forum can probably look up a parts number in the 22P book.
Last time I checked dew strips are still available, but little or no interior trim is still available. Some switches might be available. I have found a lot of items that could be found 1 or 2 years ago are now out of stock.
GM did recently restock the GT quarter windows. Otherwise, most parts just seem to disappear.
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Bob
2 - 87 GT's
85 SE 4 cyl
