I don't know if Litespeed ever used that seatclamp style, and I'm also not sure about the cable stops. I've seen Litespeeds with the more traditional braze-ons @ the old DT shifter spot. I have seen Moots use both of those like on your frame, but I'm not really leaning Moots, either. The seatcluster & dropouts don't really look like the Moots I've seen. But admittedly, my samples are small.