u can use the stock LS rods with a Stock LS crank and he will be fine... but my suggestion is change the pistons to PR3(USDM) or P30(JDM) b16 pistons it will be worth it in the end. Also get ARP rod bolts for the connecting rods its VERY HIGHLY recommended unless u want to be rebuilding ur block alot sooner that you normal would. He doent need aftermarket rods also he can just shot peen the stock rods the LS/VTEC will only produce around 175-210ish HP (Depending on supporting mods)and the LS rods will be sufficent