Who Makes One Quality One-Piece Carpets?

Hey guys, thanks for all your replies. I did some more research last night, and it seems like the carpets for later cars (74 - 76) are more likely to be one piece, but none of the vendors I found definitively said they were one piece carpets - many said two piece, and others said nothing - but none said one piece.

I guess I'm going to contact one of these vendors and ask whether or not a one piece carpet is something they can do.