magnum heads

yes they will work but maybe not the best choice. You will have to mod the heads to make the old intake fit. (bolt angl is different) also need a swap kit (from mopar eg) Prbly have to do some intake port matching also. Id just look for some old 360 heads if it were me. It be alot closer to a stock 340. IDK, I've never heard of anyone using Mag heads on a 340.