I had a Novara Super Strada come through that was Tange 1 and well made. I have also seen another late 80's Novara that was all Tange 1 with steep angles and no eyelets. Both made in Japan and on par with most other Japanese bikes that I have seen. Yours looks much more interesting though. Nice find! Gipiemme makes an Aero adaptor that will allow you to attach regular shifters. They pop up on ebay from time to time.

Jake