I agree with Steve, Nissan put it there for a reason. Last year my mate put a one piece in his warm VL thinking it would eliminate the need for the centre bearing etc. The tailshaft was quite thick in the wall and it was balanced. Lasted around 6 months then let go at 210kmh, made a mess of the floor, stuffed the gearbox output shaft and also the diffs pinion gear. $3,000 later for floor and mechanical repairs. I know its a different car but the same principals apply, i remember touring car commodores raced with the centre bearing still in place.