I should be working, but i just called 1800GOTOYOTA to get an answer on the Suspension differences between the TRD Sport and The TRD Offroad. It wasn't too bad, it only took them about 20 minutes to get me a detailed answer. We all know about the cosmetic changes, scoop, paint, wheels, and the transmission differences.Here is the answer to the suspension question:
TRD Sport Has:
Sport Tuned Bilstein Shocks
TRD Offroad has:
Off Road Tuned Bilstein Shocks ( heavier Dampening Rate)
Progressive Rate front Coil Springs
Off Road Cambered Rearspings to compensate for wheel travel in offroad situations
Larger stabilizer Bar
So the bottom line is the TRD Sport Has a smoother onroad ride while the TRD Off Road is rougher on road, but more equiped for rough terrain.
I have the TRD Sport and absolutely love it. I figure my extent of offroading will include driving around my house to dump a load of mulch or parking precariously on a pile of snow at my local shopping mall. So , the Sport package works out great for me and I still get the cool higher than basic setup.