I have a 351w stock bore, crank turned .010 on rods and .010 on mains. I was planning on buying this engine kit. I am pretty sure this is the right one but I wanted to be sure before I ordered it http://www.summitracing.com/parts/FEM-CSMHP806-011/KitComboContents/
looks right to me. i personally dont know the stock bore of a 351. i wanna say its 4 though. check the price of one at your local machine shop. my pistons were only $15 each