Essentially I did use all GL parts, the 76 750 hub is the same part number as the GL. I started of thinking I could do the spoke conversion and still use my 750f front end but it is too narrow. I already had a bunch of different 750 and gl parts so I used what I had. The easiest way would be using all GL parts. I used the machined speedo drive from forum member since I already had it and it is so nice. Once you get the bearings you will know which one is the top and which one is the bottom because of the circumference. The bottom is bigger to fit over the stem that widens at the bottom of the tree.
Hope this helps.
Why didnt you use the GL front hub/rotors/speedo drive all together?
also, which all balls steering bearing is the top and which is the bottom?
Thanks-I'm using the exact same front end/F3 bike combo.