Under Heaven's Bridge

'''Bishop, Michael, and Ian Watson. Under Heaven's Bridge.''' London: Gollancz, 1981. New York: Ace, 1982.

See for cyborg question: aliens who "may be machines with traces of flesh, or organic beings with metallic parts." Rev. Joe Sanders, SF&FBR #6 (July-Aug. 1982): 19, source for this citation, and quote.