This is a 1981 Miyata Gran Touring that I bought as a frame on eBay. All parts were cannibalized from a 1979 Centurion Super LeMans and a Univega Alpina Pro.
1981 56 cm Miyata Gran Touring double butted CroMo frame with 1024 hi-ten fork and Tange Falcon headset and Sakae Laprade seatpost. From eBay.
Sakae Randnnr bars and SR forged stem from Centurion Super Lemans.
Suntour Barcon bar end shifters from the same Centurion.
SR Apex 52/40/28 triple crankset from eBay.
MKS Quill pedals with Christophe straps from Centurion.
Suntour AG tech front derailleur from Univega Alpina Uno
Suntour AG tech rear derailleur from Univega.
Diacompe 980 cantilever brakes from Univega.
Suntour Tran-Z gold 14-30 6 speed freewheel from Centurion.
27 x 1 1/4" Araya rims laced to Suntour sealed bearing hubs, 40/36 spoke from eBay.
Soma Ta-Bo saddle from Salvation Army.