#1
anyone knows some songs of 80s bands with two guitars that can be easily arranged for one guitar?
#2
Those, but I wouldn't recomend to play these songs live with one guitar:

Heading out to the Highway-Judas Priest (has a guitar-duet)
Running Free-Iron Maiden (has a guitar-duet)
Metal Heart-Accept (has a backing guitar for the solo)
Metal Gods-Judas Priest (has a backing guitar for the solo)