What the F@#& was chevy thinking?

I remember changing the spark plugs in a mates 76 Transam with a 6.6lt BB in it.
It was RHD, so the air con unit was on the left of the firewall, so the only way to replace the rear 2 plugs was to remove the front left tyre, and use a universal jointed 5/8" plug socket.....found those 2 plugs had never been changed since the car was new......this was 1993.
To do spark plugs on a 95/96 Mitsubishi Pajero 3.5 DOHC V6, you need to remove the intake manifold, but leave behind the throttle body.