Honestly, I've never read a "good" review of the MP springs. Most say they sag in a short amount of time. Some even say the main leaf starts to bend back the opposite way. I think there are better options out there for a higher HP car that will see some abuse. I have a set on my Challenger Rallye but its a very low HP car that won't ever "test" the springs. Even on my car the back end sits pretty low and feels soft. Granted I just have cheap Monroe shocks and Polyglas tires which might account for the "feel".