neo r31

Hi, new here, was hoping someone has done a rb25 into a r31 conversion I have a rb25neo non-turbo with a tiptronic auto Want to upgrade my aussie r31 ti, Does anyone know if the engine mounts would fit? Also, would the gearbox fit, I was hoping I wouldn't have to change the tailshaft. Any other info on this conversion would also help heaps, For instance, radiator hosing, afm, wiring and where to get the ecu and the transmition computer Thanking all of you in advance