A quick comparison of the shop manuals shows the decks hang from each frame using the same hardware, including the PTO clutch rod. Based on that, I'd believe yes, you could swap one for the other. Keep in mind, the 38" deck that came on the H3013 swings two blades, compared to the single 30" blade on the H3011's deck. So moving a larger, 38" deck onto the lower-horsepower H3011 frame could result in less that ideal mowing performance.
Now moving the 30" deck onto the more powerful H3013 frame is probably not an issue.
Might want to ask here, as there are many seasoned Honda riding equipment fans in this forum:
