TO lock the flywheel take two clutch cover bolts (or even better - some different longer bolts of the same thread)
Run then into two opposing clutch cover holes, and run a stud into the flywheel housing on the engine if there aint one convenient.
Get a mate to hole a cold chisel or similar LONG bar between the two - sorted!
You WILL need a 2-3 foot breaker bar to shift them also. I tried with a length of scaff bar on my T-bar half in ch drive, and i now have a banana shaped t bar. Bought a breaker bar, sorted. I think they are 3/4 inch socket also.
It is best to re-loctite them when you put them in, and make sure that they are REALLY ferkin tite also.
Oh yeah, once youve got all the bolts out, use the two clutch cover bolts to hold the flywheel and pull it out, but be careful cos its FOOKIN heavy - i dropped mine on my finger once, and the ringgear took the skin off.
If its stuck in place, use the end of a hammer handle and tap it all around the edge - this should displace it enough to free it.