If you are dead set on an HHT email me as I know a fellow in Taiwan who has been selling them. He also is selling the Autoland OB91 which is made in Taiwan and sold in the US as the CS2000 see http://www.baumtools.com
The site for Autoland is http://www.autolandscientech.com
The newest module will do most functions of the Star and HHT including variant coding and activations. It will cylinder balance the late model cars by killing injectors one at a time.
Bosch Master, ASE Master, L1
33 years MB technician