I am looking to identify quality Chro-Mo 1980's era framesets designed for the - don't ask - 27' (ERTRO 630mm) wheelset. Naturally, this is pointing me in the direction of Japan built bikes intended for the US market.

I have identified the Miyata 710 pre circa 1985 as one example of a bike to meet those criteria. Any other ideas for late bike boom era 630/27" quality frames?