This is an interesting option! The specs are impressive and looking at it on paper I think there is a chance it will fit well. The diameter at 4.7in fits inside the stock bezel, but it seems that the only mount feature (tapped holes) is located on the outside circumference. That makes it tough to reach between light housing and bezel to attach a bracket. The depth looks good so it should sink back into the bucket nicely.
My best guess based on the dims I found (below) is that the mount screws would just barely fit within the inside lip of the bezel. Hard to predict with certainty since I can't find great pics or more detailed dimensions. I'm not even sure this shows correct dims for the Super Sevina.
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I think it is worth a try if enough people have an interest in this light. It is expensive at $1200, so it is a bit of a stretch to buy just for test fitment. I wonder if anyone has a light on hand that they would donate to the cause. It will be returned to them.