8HP's are 100% electronic shift. No mechanical linkage at all. They even have a rip chord to get them into neutral because if the battery ever dies, there is no way to move them.
Agree, curious as to how he is shifting. The Sound german trans controller is really the only mainstream one I'm aware of in the states, besides turbolamic, and I dont think many in the states use them. Pretty sure he'd have to use the electronic shifter from a late model LX/LC, or the rotary dial style. I do see the round thing, but i assume thats a digital readout of what gear it's in. doesn't look like a shifter knob. Looking forward to more info from the OP!!
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