the factory rods are decent
the Truck rods, also called "thumb rods" are better
the dimple HiPerf rods are the best
all benefit from modern ARP bolts and a re-size (this goes hand-in-hand)
used the 427 FORGED crank, it needs to be rebalanced with the rest of your goodies
thousands of home brew 427s out there. L2268 pistons are heavy but darn near bullet proof. L2300 pistons have less dome but will make 9-9.5:1 no issue. Naturally other pistons are out there
'049' heads are nice, most measure 120cc, not 113...bad internet info often repeated. Big valves are not a necessity, ask GOTAGO,,,but you must massage the heads to get some extra flow
Cams, usage, gearing, expectations please. Budget for a roller cam? I'm going to change mine flat tappet cam in my Vette to the 502/502 HR (new thread today).