If I go reverse flow, I only need to cut the inlet and have a firebox welded on. Of course no top lid and only the side can open due to the smoke stack. But if I go pellet, I would have to mod that current door by welding and cutting. But I would also lose the option of using it as a charcoal grill. Reason I am thinking of scrapping the pellet idea. I have seen some reverse flow units and I really do like how well they cook.