The Ninja makes 'upgraded' crossovers, he didn't have anything to do with the original stuff and I do not know the exact interior dimensions of, say the RS850, so for me to make a set would be rather difficult and to get that same rosewood finish they had would take me along time, much easier to look for a used set now or even better and owner nearby so I don't have to spend any more money ;\)

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70