People get keggles because they are usually A LOT cheaper than a pot of the same size. If you can get a pot for the same amount I would go that route. As far as modifying the SP10, you need to put a grill on top of it because the keggle is larger than the burner. That being said, you should get the OD of the pot you are looking at and measure and see if it will fit. The flat bottom will probably make it fine.
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