Hey Paul,
I have it on my 1970 Bug (standard).
I haven't driven it much yet, but it does make the car a bit
'nervous'.
The only thing that worried me is that it says 'for offroad use only'. I also spoke (emailed) with a guy who broke the adapter.
He told me to use a steel one in stead of a aluminum one. But that was after I installed the aluminum one
Rob.