Fork sizes are as follows:
Upper ClAMP (OPEN): 51.11mm
Lower Clamp Diameter (Open): 54.06
Upper Clamp (Closed/ Tightened): 50.04mm
Lower Clamp (Closed/tightened) : 53.3mm
Fork size: (Upper) : 50.9mm
Fork Size ( Lower) : 53.3mm
Length wouldn't make much difference (assuming they are not to short) as they could be passed through the clamps and then tightened if they are too long. If we used a matching front wheel, brakes etc... then surely it would work without the need to machine axles etc...