magnum heads on a 416 stroker

stroker kit was for a 340 i think 30 over bore i call scat and hughes today they both said crank and rods will work in the mag 5.2 just need new pistons.the reason for all these questions, i bought a dak r/t 5.9 has a rod knock and i thought the la stuff would bolt up, so a 392 instead of a 416 it is just didnt want to waste a stroker kit its so hard to let go of parts you save up for ever. thanks everyone for chiming in .