I have not done mine yet , I have to get the car going first , I think they are about 220000 jpn yen and you need to add bearings and R33 type synchros and selector hubs on top of that figure . a friend has just got a set but has not installed it yet. that is a complete set 1 through 5 with new input shaft etc as well , NZ's fastest GTR is making 870 hp and is using one of these sets. there are several you can get with the most popular one seeing a really tall first gear (able to do 100 kph @ 9000 rpm).
Brenhan.