I modified Cor3ys upper side part to make it longer and include the tube the shaft sits in. The Hub was modified to make the hole larger and to include a longer tube to stabalise the the hub on the shaft.
I made a shaft to fit - who wants to buy 2 meters of pipe just to get 175mm worth when you can print one! I also made a base for the spool holder and a couple of spacers to position the filament wheel in the center.
3d model print parameters
You'll need some M5 nuts & bolts for the base and M4 nuts & bolts for the sides and the hooks....