OK, so while I was changing out the plugs I thought of two things....
First, the engineering design meeting at Fuji Heavy Industries where all the Japanese guys sat around a table and said, Aw, yeah that will be OK.... that number 4 ignition pack will be fine... nobody will have a problem with that....
And second, I envision the #4 pack being the first thing they put on the production line and the rest of the car being built around it.
Although it was not the most difficult work I've done, it was still much harder than it should have been.... I mean.... they're just spark plugs....right?
OK, I'll stop complaining now-- the car runs great and the next time will be a lot easier.