I owned both up to two days ago and sold my older smoker so I can't help you exactly but looking at them as I did many times, I'm thinking they used the same bolt pattern otherwise there would be issues with the charcoal grate. Worst case scenerio, drill or enlarge the holes to fit and touch up with paint. The wider legs will most likely cover the holes or just use larger washers. In my opinion there really is no advantage to the difference in the bases other than the heat shield which on a wooden deck is more cosmetic than not. I know because I used the older model many times without an issue. Also I have heat shield matts underneath.