Originally Posted by MDORPHN
Dan's photos showed that the rear springs are the same (as also indicated in your diagram), and your diagram shows that the front springs are also the same.
Other reports, however, have suggested that the 1M has different spring rates due to its lighter weight.
Do we now believe that the differences are limited to different shocks and sway bars?
I have not yet had a chance to compare the springs. From Dan's post, the rear springs appear to be the same.
Keep in mind that for each car, several springs combinations are possible depending on your options. This is why spring part numbers are not listed on online catalogs.