3.6 is a great engine but the swap would be no where close to worth it. Engine, trans, eng management, trans management, exhaust, cooling speedo, not to mention other things.. all listed are not compatible with your Dak at all and too top it all off that engine/trans never came in a Dak so it would be fabrication and communication intense to pull it off. If you wanted to do all that work a 1st gen Hemi (from the new era) would be a better thing to work that hard on swapping.
That said, Daks of your vintage came with as mentioned, 3.9, *5.2 & 5.9's so every part is available to drop any of those in. If 5.2, you will have to find 2000+ R/T donor parts as the 5.2 was replaced in 2k with the 4.7 and while Im on 4.7, IMHO its a POS so dont even wast time on that engine.