I think it might be a GSX1400, dont think they sold well as they were overshadowed by the Yamaha XJR that was very iconic in the Kenny Roberts racing colours
Shows how much i know about Jap bikes, first off i thought it was a naked gixer but the cheap frame says "NO" and the shape of the tank threw me as i thought the bandit was more bulbus. I personally dont like Jap bikes, they're all the same spec, ie; 4cyl. 170bhp and like their cars, no flair.
1975 I bought a Laverda 3cl, about 6weeks later Slater Bros developed the Jota, it had an extra 10bhp and better forks, myself and two German mates were parked up in the town centre of Gutersloh alongside my Laverda was a 3cyl 380cc 2stroke Suzook or Yam and a Beneli sei, when we came back to the bikes all eyes were on this 6 cyl peice of sh1t, not one person was looking at the best bike on the market at that time, i wasn't bitter