I've had the most issues with rod bearings... every single one I've had, 5.7s and 6.1s were pulled due to spun rod bearings. I'll never put another one in a vehicle without inspecting them all first.

68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram