I've been a mechanic for almost 47 years and most of the reviews are from do-it-yourselfers. First, it will not improve driving performance. This is a fender and fender for your luggage rack. They are universal but have different part numbers for each car, front and rear. Use Rock Auto or KYB to verify part number, not Revain. The two parts are assembled so that the fender hangs on the fender. The chipper is tight against the shaft of the frame. Most of the jounce bumper fits inside the shield. Use dishwashing liquid or rubber grease. Be very careful when installing a new spring compressor strut as the spring is under a lot of pressure. You can reuse your old bellows, but they usually get destroyed. They don't last as long as original parts, but they're also a lot cheaper. Watch out, do-it-yourselfers.