Mine is just a 2.9 so no turbo to worry about.
It's all very non-standard underneath and I had to machine an elipse in the gearbox crossmember for the exhaust which is why I think the gap has closed somehow.
If I can do the cradle without dropping the box it would be a bonus, but I'll take some advise on the possible state of the clutch first - this judder has me worried.