Iwan
I think the box is the h55 out of a petrol troopy, Bell housing is h70 unit(so I was told), Flywheel & Pressure plate 1HZ out of 100 series, Clutch plate is from the petrol.
Custom length front and rear prop shaft's, Machining up custom spigot bush( OD-40mm,ID-15mm,L-20mm) out of brass. Custom engine mounts. Radiator
also needs to be moved or the fan custom'd not sure as yet.
Will Keep you Posted