Nerf bars for Standard Cab

I picked up my '08 Taco from the dealership yesterday. It is a 4WD Standard Cab. I wanted nerf bars, but the parts guy at the dealership can't locate any for the Standard Bed, only the xtra and double cab versions. He checked Westin, Smittybilt, JC Whitney, and a few other sources and came up with nothing. He commented that maybe less than 10% of Tacos currently being built are standard cab versions and apparently there isn't enough demand for some aftermarket manufacturer to make nerf bars. Does anyone here have a 2nd Gen. Taco standard cab with nerfs, and/or know where they might be found???