2332owner
I knew that the Datsunsport 76.8mm forged pistons had the small pin, but these things cost cubic money even 15 years ago.

I wonder if either of these companies market within Australia. The price may be a factor. Even the stock pistons, when purchased new, either genuine or replacement, are not cheap. If one has access to a junk A15, then there is a good chance that the used pistons from it could be used in a strong A12 motor. The only cost would then be for rings & the rod alterations. The stock cast pistons are surprisingly robust & will handle the revs & power output of a well built street engine.

As i have said before, A12a rods should do the trick without alterarion.