is worth checking you oil level (17mm allen key bolt on front of gearbox, remove it and with car level the oil should be upto that hole)....but as i know from chatting to you you've had whining for a while. it'll get worse and worse will the 'box eventually implodes though, as fab's said, they do whine a fraction anyway...my rebuilt one does very slightly even! (nothing like an MR2's gearbox tho...you should hear them! lol) 6 speed is a very expensive option....be much cheaper to get a rebuild with a lower final drive. the middle cost option is a rebuild with lower FD and a quaife ATB diff [