Just got a Takara frame and fork over e-bay. Also purchased a very used B5N Brooks with post, and a cowhorn bar and stem to go along with making it into a fixed. Impressed with the quality of the frame, and sans forks, it seems surprisingly light. None of my stems fit-they are all 22.2 mm. One of the five quills goes into the steerer tube, and into the steerer locknut, but none of the stems will sink in. Guess it is a 22 mm. Sheldon Brown says a 22.2 stem can be made to fit by sandpapering down-it only has to be reduced by .1 mm, so I guess it is possible. Your frame looks newer than the one I just got. I am also considering putting a lighter fork on it and seeing if it can be a real sleeper with a narrow single crank and pedal set. Good Luck!