OMG, I don't know how many of you are familiar with that Schram'* yard in the second link, but that place is INCREDIBLE! They basically get all the GM write-offs, so the majority of their cars are brand new, and were never titled. They'll also have crazy proto-type things in there from time to time. They just sold a supercharger off a 3100/3400.
And I recall a RWD 3800 supercharger, as well (I assume for the f-bodys).
I was there only once, but what a freakish experience to see all these brand new cars sitting there, with parts ripe for the picking. They let us look around, but if we actually needed anything, we had to get one of them to take it off for us, and write down the stock number for the car they took it from. Very organized operation. There was a C5 'Vette rolling chassis, a Yukon Denali, you name it, it was there. The indoors warehouse......oh man, just TONS of wheels and tires, seats, door panels, dashes, and so on. It was just a lot to take in all at once. Of course, they're not cheap by any stretch of the imagination, but if you need something that was just released for a project and such, there'* no other way to go.
By the way.....is there a demand/need for those SSE/SSEi matts? I see them quite often in the junkyards around here.