I don't know about Corvettes, but in High School, I had a friend with a V8 Monza. The shop manual called to lift the motor to replace the plugs on one side. Our shop teacher had us cut a hole in the fender and then make a removable plate to cover the hole. Why the factory never thought of that is beyond me. The Monza was designed for the Wankel and when, at the last minute, GM dumped it the existing engines were shoe-horned in.This kind of poor engineering is pretty common despite how deplorable it is. Lots of these stories--like my father's 1967 Buick Wildcat (now THERE'S an oxymoron) on which you had to remove the rear bumper to replace the tail light bulbs. And I seem to remember a Corvette where you had to pull the engine to replace spark plugs.I tried to put the filter back together with the shift actuator on and had a heck of a time with it. I finally gave in and took the lever off to get things back where they needed to be. An air filter shouldn't be that difficult to change.
More recently, I had a Ford Expedition that took me 3 hours to replace 8 plugs and you had to do it regularly or the plugs would seize in the head and either break off or strip the threads on replacement.