Rear coils no longer equal height - which side should cop the short straw?

[NissanGQ4.2]

Thinking of doing this with my GQ actually so if anyone has done this I'd be interested to hear how it went. I am figuring that I should do this before forking out for 2 new springs for the back. Might get another couple of years out of them

We could just move overseas for a few years and convert it into a left hand drive *LMAO*