I bought the Nishiki Competition frame on eBay. Wheels: Formula/IRO hubs with fixed/free rear hub on Velocity rims. The Sugino Mighty Comp crankset with 171mm(!) cranks came with the bike, as did the DiaCompe "Grand Comp" stem. I put on a Nitto Cromolly (NJS) handlebar. Current gearing is 44x18, nice and easy for my first few rides. The brake looks bad but it was my first day on a fixe and a bad day to die stupidly.

The frame has a painted decal that says made in Japan, Double-butted Cromolly...I suspect Tange tubes, but it isn't explicitly indicated anywhere.