Does anyone know how hard it is to change an inputshaft bearing on a T5 box, ie if it can be done without stripping the whole box. Just recently finished building my Saff but the gearbox is whining on idle and goes quiet when clutch depressed. the car drives mint, changes sweet as a nut and no popping out of gear or crunching.

Ideally wanted to try and drop the box and change the input shaft bearing and front and rear seals before spending £100's on a full rebuild.