Which way should my Pistons/rod point?

Getting ready to start assembling my 340 soon and as I visually inspected my rods and Pistons I noticed I couldn't find any indicators to show which way they should be pointing once installed in the block. Can anyone point me in the right direction? Pistons are new SRP 142068 and rods are stock 340 that have been balanced so I don't know if an indicator was machined off during lightening process.