its really easy .. i did mine .. a good socket set .. torque wrench .. i renewed everything except the crank.

need to find a good engineering company to do any machining work..
also had the complete bottom end lightened and balanced from clutch to pully

and dont forget to put the oil splash guard back in (small bit of plastic that clips over the inside of the lower oil breather hole)

when takin it apart label or mark the crank so you know where the main caps went

keep everything totally clean when asembling , i washed everything in parafin first then oiled before fitting. and clean anything out from the bottom of the thread on the headbolts .. erm ... thats about it really

hth