There's no doubt that Sterling produces a hell of a nice carb. However, he is not currently taking any new orders for carbs. He may return to it eventually, but for now he needs to feed his family and make it through this recession.
However, if you keep an eye on the For Sale sections, you might run across one. They are very rare, but they do show up time to time. As far as mounting this on a Bridgey, I don't see why you couldn't. They flow enough to handle it, and the jets and air bleeds can all be swapped for tuning purposes.
Good luck.
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