The pistons are fine. As long as they have a good amount left on the crown and have not been machined too much to get the correct C/R.

The rods is where it gets a little tricky. I have a few ways of running VERY good rods but will need money spent on the crank for the rods to fit. (NOT an 1800 crank either )

Then you will be held back by the head

Just save your money and build a ZT as the head dont cost anything and can flow 330bhp std. Just spend the money on the bottom end

Anyways im off. Have fun