High quality crank seal kit for use with standard GT750 bearings NOT original TR750 main bearings.
In fact the original TR750 bearings were the same as the GT bearings but with an extended external section which held the seals inboard of the bearing - they were 100g heavier than the equivalent GT bearing and seal but did allow for the end cap to be fitted into the bearing on the r/h/s. This can all be overcome for rebuilds.