Quote Originally Posted by 33fromSD View Post
I switched to different spring rates & adjustable QA1 shocks on the 33 a couple years back and do not regret it at all. I'm running 9" 300# springs in the front with dual adjustable (rebound & compression) PromaStar shocks in the front (inverted for easy adjustment) and in the rear I'm running 12" 150# springs (recently chnaged from the 12" 300# I was running) with single adjustable (compression) PromaStar shocks.

The ride is awesome. Still a little stiffer than a normal passenger car but I do not get the jolt/rough ride over bumps like I did with FFR supplied Konis & coils.
Jim
Jim, you have the '15 IRS, correct?