I have an 06 WRX and I replaced my swaybars with 24mm front and back whiteline ones. I have kartboy rear endlinks. The problem is the whiteline hd front endlinks (KLC30). I get this kind of creaking noise when going over a speed bump or a poping noise coming from the right side when turning. Im not sure if I have the right endlinks they I was told they were for a sedan but I looked it up and it said it was for a wagon but if i go to some other sites they have a picture of the same endlinks for the sedan. Ah Im confused !!!
The KLC30 are the wagon fitment endlinks. If you have a sedan, I don't see how you could make the wagon links fit. The ONLY difference bewteen sedan and wagon links is the size of the lower bolt hole: Sedan=10mm, wagon=8mm. Also, be sure to bolt the links to the correct torque: Top bolt should be 33ft/lbs, bottom bolt is 22ft/lbs (wagon) and 33ft/lbs (sedan). I have installed both front and rear links on my car and thought I could just "make them snug" by feel, but they all ended up making noises until I bought a torque wrench and torqued the bolts properly.