[DanEC]

The flywheel is supposed to be neutral balanced and the clutch plate neutral balanced. If both are new you may just have to bolt them up and go. The slight offset of the one flywheel bolt is not going to be an issue.

You may be able to get your flywheel and clutch plate balanced together and index marked over there. I tried to get both flywheel and clutch on my 66 Vette re-balanced this last summer (new flywheel) and was unable to locate anyone within 75 miles or so who had equipment to do it with anymore. Ten years ago it wasn't a problem. Everyone now wanted my stripped block components (crank, rods, pistons) and my flywheel and clutch to balance all together. I didn't want to mix new and older index balanced parts so I ended up buying all new components and just throwing it all on the engine - seems to be running smooth.