Hi Niall,
I am either brave or stupid, the answer I shall let you know in due course.
You can be sure that i will document on this forum the blow by blow account of removing the transmission.
Even more foolhardy while the gearbox is out I might

just strip it down and replace which ever bearing it is that causes a slight whining noise on the overun, more noticeable in 4th & 5th.
Watch this space..........
P.S. How much is a clutch for a V6 these days ?
Stevo.