The trick is to make the extra set of spark plug wire adaptable as necessary. My set up at the light show for the truck was somewhat ghettoed up with electrical tape. I wouldn't want that going down the road the way I had it. I expected the connections to fall out easily as the tape would get mushy.
But I did dream of making a white rack of four tubes in front of my truck's radiator behind the grille. Using white tubes (makes it legal) I'd hook up each engine cylinder to a single tube in succession. So you'd get the light flowing bottom to top if your eyes were really fast. Like a dragonfly's. Us humans are slow, and so it would be cool at a stoplight to just rev it. The 4 cyl has a good range for seeing flashing light go to almost solid as it gets between 800 and 4500 rpm. On a bike it would be extra sweet. 12000 rpm must be beautifully solid.