Im intending on doing work to my A12, complete rebuild and head work, then supercharge it. But Im not after a drag machine or anything.
I decided to do this simply cause then I know everything that has been done to the engine, where as if I got an A15 (Which seems hard to do in Townsville) I would still go through with a rebuild etc... so basically I just end up spending more money, although I still havent worked out how big a difference it would be...

This probably hasnt helped you at all..