I'm torn between taking the simple route of using a one piece propshaft and using a split prop on my Firenza, anyone have any useful input to make on this bearing in mind I'm using a live axle and the prop will be 45" overal length?

My concerns are vibration and noise transmission.

I did originally try a one piece prop on my Escort but I swapped it for a split one because I was getting a vibration, this disapeared when the second prop was fitted.