Thanks for the link bairdco, just got the sprocket and it was a perfect fit only problem is it ended up being a 38 not a 36 as the seller described but after looking at it closely I don't think you could get a 36 and have the offset.
There would be no way to re-cut the original because 5 1/2" ends up being inside the slots on the sprocket.
Hub fits pretty well too. Test fitted it on an old motorized bicycle frame that may or may not end up being the starting point for my BT build. A little grinding on the dropout and some widening of the chainstays with a 2x4 it drops right in.