From what I recall, the outer wing panels on the 2023 are definitely different from the 2015. There was a pretty significant design change around 2018 or 2019 that affected those body panels. You might have some luck looking at 2016 or 2017 models for compatibility with your 2-15, as those were largely the same generation. Anything 2018 and newer are likely to be a no-go without some serious modification, and even then, the mounting points are probably off. Try your luck on eBay or some of the dedicated Slingshot salvage yards!!