I don't know if this will help, but maybe others who have used the BAT pump can chime in with their experiences.
I have a 99 Cougar with returnless. The pump BAT sent me wasn't a direct replacement for my Cougar. Well, the pump was, but the filter sock they sent wasn't. I had to clean my old sock and reuse it. The sock they sent looks like the one in the picture on the BAT site. There is a port in the middle of the sock that attaches to the bottom of the pump, making the pump look like an upside down 'T'. My sock had the port at one end, and IIRC did a 180 and made the sock stand parallel to the pump, like a 'U'.
Hopefully someone with a regular Duratec and someone with an SVT who have replaced their pumps can say what their socks look like. My thinking is maybe the Cougar and SVT share the 'U' sock, while the Contours with regular Duratec's have the 'T' sock, and BAT only has the 'T' socks, so they say they won't work with the SVT, and don't know that the Cougar uses a different sock too. This is purely speculation though.
Bob