318 Stroker Build

1st off if you already have those pistons scrap the Stroker idea and run your stock 3.31 crank. If you dead set on running a 4 inch stroke you need some icons like these
ICON Premium Forged Pistons IC846-060
Like said before you do not need a stroker to make 300hp. A stock bottom end 318 with worked heads will make over 300 easy.
What heads do you have? Or plan to get?
What kb pistons do you have kb167 or 399?