unfortunately not all the sensors are inplace on the GTT compared to the GTR
it does work but unfortunately u have to do quite a bit of messing around, including rewiring to the ecu ect ect. kinda a big job.
ur on the right track, all the MFD is a screen that outputs readings, so its pretty much finding which outputs do what in the GTT......not as easy as it sounds
its a pain in the ass for the 32 and 33s. unlike the r34s u have to actually make a mould to mount the mfd. its a straight drop in for the r34.
im actually planning to, but havnt made it official. ill get the car back in about 2-3weeks so ill sell it then.
shoot us a PM if ur serious.