Does a 1998 Dodge Ram 2500 hood fit to 2000 3500?

No, a 1998 Dodge Ram 2500 hood will not fit a 2000 Dodge Ram 3500. While they're from the same generation, there are subtle but significant differences in body styling between the 2500 and 3500 models, particularly in the hood area. The 3500 often has a different contour to accommodate a larger engine compartment.