Well it's a ZR2 with the AEV Bison package. I think it has every option except the engine block heater? Hope you find one eventually, cause it really is a nice place to be!I'm still trying to buy one of these. I thought you had a ZR2, not a Bison?
Edit: I walked past a new Sierra AT4 in the parking lot this morning and noticed it had the Multimatic DSSV shocks as well. That's the whole reason to get the ZR2 over the Trail Boss IMO, so you might want to expand your search to include those as well?