I've recently purchased serial number K9AU3795 . I'm thinking USA market 1979 ? The bike is silver with a Sugino Mighty Competition 2 chainwheel crankset. The rear is a five speed. It has aluminum 27 x 1 1/4 ARAYA wheels. A sticker on the seat tube saysG3445 seamless hi tensil steel throughout. It has Suntour bar end shifters and Suntour Cyclone deraillers front and rear. Suzue hubs. Maeda Industries Perfect freewheel?Also the front fork has a sticker that says SKV. The model sticker is gone so I'm not sure what I have here. Any help would be appreciated. Thanks