Yep, there a a number of advantages to sticking in P2 class (and a pre 1986 car helps too) :)
I plan the run the current engine as is for the first few months ( or until i blow it up :D ) so I can learn how she handles. Then I might look at building something with a bit more oomph.
The engine was re-built by Michael (Canberra VW) when he owned the car a few years ago, it has flat-top high compression pistons and other good stuff already, so hopefully it will be a good enough base to start with. I thought the G cam might be a good match for the Webberas without requiring major surgery to fit.
C