i heard there's a way to fit a union to a burton ics. i'm not sure how, but i've seen some unions mounted.
i've got flux feedbacks on a burton ics. fortunately, the Burton 3D disc fits on flux's bindings, so flux makes a disc (that they send for free if you request it) that fits perfectly. i've gotten the retro discs from burton and from flux, and flux's fit flush. as far as how they are mounted, they seem perfectly fine. i haven't taken it riding yet.
i'm sure if there's a way to fit unions on your ics, it should be fine. but burton est would be your sureshot way to go.
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