Ok to get TDC:
a) take all the spark plugs out.
b) Rotate engine by hand (clockwise) .
c) Put thumb over # 1 plug hole so you can feel compression stroke; rotate several time so you get the feel of the the difference between compression (pressure on thumb) and no-compression/exhaust (sucks thumb) upward stroke of # 1 piston.
Undo the rocker cover nuts, pop the rocker cover up slightly and rotate motor using either the relay or a 22mm socket on the harmonic balancer. Turn until mark on the cam is lined up with the right hand side of the motor. Mark the TDC mark onto your harmonic balancer. Now put the dizzy in so that the rotor is about 2-3cms ahead of the number 1 mark.
You will now need someone to move the harmonic balancer backwards and forwards until the bottom of the dizzy engages with the oil pump. The rotor should now be about 1cm clockwise of the #1 mark on the dizzy at TDC. Take note of the position of the dizzy, rotate it so you can put the dizzy cap clips back on then turn back to original spot, tighten dizzy bolt.
Test to see if it runs. Then turn off, earth the grey connector near where the brake booster is. Set timing and your away.