Ok.. got an update. Being told that it was possibly built by Litespeed for Caloi (Brazil) USA racing Team in early 90s.
All the braze-on's match, as do the drop-outs. Was told it might be 1-1/4" head tube, will confirm tomorrow.
UPDATE: Frame is 100% not steel, did magnet test, weighs in at just under 2lb 14oz. 1-1/8" headtube. BB shell is 70mm and appears to be Italian threaded. Seatpost size is approximately 29mm