At that power level, they'll be fine. For that matter, properly resized stock rods w/ARP bolts would be fine. I ran stock 5.7" rods and stock cast crank for years in a 13:1 406 in a 3075 lb 63 Nova. Ran 11.20's at 118 up here in Co and 10.80's at 122 in Topeka. Never went past 6500rpm and never had a bottom end failure. Cracked a couple of cylinders though....