It's the WorldPAC system. A lot of different merchants seem to be middle men for the same system. You'll notice that if you order the same part from several different places with the same web interface, you'll get them all with the same part indentification sticker on it.

You'll have to find a place like Performance Products to get a unique selection.

Correct me if I'm wrong.

Alex

__________________
1983 300D (parked for four years)
2012 VW Sportwagen TDI Manual
2001 Miata SE
1962 Chevrolet Corvair Rampside