Andy and I discussed this at great length yesterday for about 10 seconds...
As far as I know you cannot buy the Quaife one anymore, Quaife haven't made them for years. Andy has that 2.2 version (Ithink) and his steering is awful! I hate it.
I think it would be impossible for Andy to turn the wheels with adjustable TCA's without rigging up some kind of complex pulley system that hangs down from the headlining.