On my 92 Corvette, the steering components are in the way. So I pull the lines and pull them out of the way with a small rope. Remove three bolts and using a 6 inch two arm puller, I ease the harmonic dampener off.
Here is the full view of the factory Optispark. Three bolts and it off it comes.
Here is an image of the MSD 8381 Optispark installed. Looks pretty clean, right? I replaced the water pump drive seal and the Optispark drive seal prior to installation.