I never knew anything was interchangeable, but recently have read of a few people using the parts from Golfs/Jettas. You will not have the tilt option though, if you go this route.
I'm one of the people who did this recently.
Make sure you also get the interior cloth panel, too. It's a very easy swap, only takes about 1/2 hour to do the whole job. Once you are done installing the A2 setup into your s-rocc remember you may need to adjust the height adjuster screws.
1985 VW Scirocco 8v -- 1969 VW Beetle -- 1968 Thunderbug dune buggy -- 2012 Triumph Thruxton 900