Flexible ABS bath drain? WatcoFlex®

[justinae]

I've got a tub install that is going to make me take a pretty hefty notch out of a structural piece. I see that Watco has the flexible drain and overflow kits (http://www.wcmind.com/watco/PDFMainFrame.html), but they are in PCV only. My drains are ABS. Does anyone make an ABS version?

thanks.