I too have a tall
car. Hahaha! When I had sway bars installed on my convertible they informed me that one side was taller than the other by 3/4 of an inch.
Well after much thought ARGGGGGGGGGG! Ah just a moment, I remembered I had to replace a spring some years ago on the drivers side due to a rifle shot like spring fracture. I'm sure the replacement spring was just from another car either a sedan or a hardtop was just different. Maybe the aging process is not the same in all cars. One wrinkles and the other stretches!
I bet the only way to get the same height is to get 2 springs from the same donor car or new rplacements.