Help me ID this bike please Can anyone help identify this old hottie? Kinda looks like 80's Peugeot per the Shimano 105 parts. The head badge looks like it could have been in the shape of a shield though. Seat tube has a sticker that reads BULLSHOT (grease). I doubt the handlebars and seat are original. Any thoughts? Thanks all!
(Handlebars will be wrapped)
Serial G0583
This frame is manufactured by Giant.  The G0583 is a date code from Giant.  The serial number is on the other dropout.
Giant was contracted to make frames for many brand names in 1983.