If you're going to mount a more traditional suspension fork on it, you'll need C'dale headtube reducers, along with - as others have said - a fork with an axle to crown (A2C) measurement in keeping with the original and, of course, a 1 1/8 headset. If you decide to go this route and want the reducers for this vintage bike, I have a pair that's never been used or installed. I also have a couple of headsets (one used but in good shape, another one that was installed but never used). Let me know if you're interested. Here's a pic of the reducers
