kinda crappy photo, but the info, the decals (especially the seat stays) all look about right as far as I cant tell... I hope you bought it first then flagged it up on the internet though, as it seems a pretty good deal!
I really cant tell from that pic. downtube decal looks genuine. ask for better pics. I know they made the litespeed built in a smaller frame size than the 19in tomac rode.