Hello! Been lurking a while, but now its time to actually post.

I recently got my hands on a Nishiki Competition in very good shape, nearly mint.

Specs:

Frame is Champion #2
Wheels are Araya
Handlebar says Sakae Custom + Road Champion Japan
Handlebar stem is Cinelli (not original?)
Saddle says Taihei Painless or something underneath. Saddle post/stem says Mighty
Front and back brakes + brake levers are Gran Compe
Front and back derailleurs is Suntour Superbe
The crank says Super Mighty
The biggest gear (or whats it called?) on the cassette seems like its been replaced. Its painted black (the others are not) and it says Shimano MF-ZH06

The serial is EJ103957 . Looking at the opening post that dates it to 1980? It has 6 digits after the J, not 5. Maybe they made a lot of frames that year? Maybe its far newer? I dont know. Thats kinda why Im posting here too =)