I "think" my tailshaft needs replacing, u-joints feel quite rough when moved by hand, centre bearing rubber housing seems okay (no cracks) besides it sagging but I do get a "vibration" under hard acceleration that feels exactly like a center bearing housing failure. 

Maybe the vibration is something else?

Apparently these tailshafts can't be rebuilt and with the car being an uncommon import I'm having a hard time finding what tailshafts are compatible. 

u-joinf first, I'd think.  

You can put the FWD fuse in and see if it makes a difference.