For sale is a set of lowering/ sport springs I have recently pulled out of my 240.
These are a stiffer alternative to the conventional Kings KVRL-07 rear springs, they were rated to 160lb that dropped the rear end by about 30-35mm when I purchased them.
I have gone a different direction with the suspension on my 240.
You will want good shocks to go with these, your results may vary as these are mildly stiffer and lower than the Kings offerings.
Asking $150 pp
Located in Melb, can post