WOW do I highly and strongly disagree with dynomax. I bought the ceramic coated for my 340 duster. They were from Jegs and $285 IIRC. I had to lift tweak and pry em in then out beat em bash em in and out 3 times untill the clearance was enough around the passenger torsion bar and the steering box and the steerling linkage underneath. They looked good after they were finally in other than the bash marks but then leaked at the flanges after about 2 weeks. Also major underneath clearance issues. Couldnt go over the smallest of speed bumps at all had to go sideways to get over.
Bought a full set of TTI's and am so glad I did. As was previouslt posted "you get what you pay for" and "add the $300 to the price of the TTI's after you decide to do it RIGHT