Late 12 volt FWs will not bolt up to early 6Volt engines without modification to the FW or crankshaft.
The step on the end of a 6volt crank is shorter.
If your 180mm FW is a late model 12volt ring gear type,
it may be a bolt on swap,
but just check the end float of the assembly, before and after, to make sure there is enough clearance.
Regarding your throw-out bearing type,
compare your 180mm clutch to the new 200mm.
But dont mix and match the clutch bearing types.
Throw out bearings that have a 'slide tube' to support them in the gearbox,
run directy against the fingers on the pressure plate.
Early type bearings with no support tube
must have a ring on the pressure plate to protect the fingers,
and take up the 6mm difference between early and late.
If yournew pressure plate DOES have a ring on it,
and you dont need that ring,
it can be removed.
westi wrote:That's mad Alan.