....did you use the stock, flat plate that the original brackets bolted through or did you just both the ST sway bar clamps directly to the frame?

Thanks.

You should use the original brackets. You might also consider reinforcing the frame in front, since over a period of a few years the sway bar will start to tear up the frame rails. Lots of info on this at hybridz.org, haven't looked here but I'm sure its been discussed. www.baddogparts.com sells a weld on angle bracket that significantly strengthens this area.

Thanks for the tip Jon. I have drilled through the frame rail and will use a 3-in. bolt (the rail measures 2.5-in.) that is double-nutted. At the top I intend to put a similar plate that is found on the bottom in the stock configuration.

That's a very good solution to the problem. Should be fine that way for a very long time.