I've seen what you are talking about before, if I had to guess...I think it might be to compensate for the drivers side lean from the factory? Throwing the stiffer one on the drivers side might help alleviate some of the unevenness I guess? Kind of like how OME tells you to put a trim spacer only on the drivers side on certain applications...
It should be the same spring 5th gen to FJ - maybe different part numbers not sure, but rate and length should be so close you can't tell a difference.
[MENTION=45399]thebwlife[/MENTION],
You were dead right about this. Thanks again.
Finally got these on my truck and the result is exactly the same as guys are getting with FJ springs.