Did my Poly front end-links (Energy Suspension) and regular rubber rear end-links (Moog) two weeks ago. Did these, Raybestos ceramic brake pads, and premium NAPA rotors, fresh Mobil Semi-Syn oil and lets, just say she runs like a top, and takes to the corners so well. Not to mention without the extremely annoying suspension clatter and the steering response nothing less than
from what it was like before.
I've found the new end-links, and Pilot Drving lights to be the biggest bang-for-the-buck mods I've done, with the CAI, 3" DP, and high flow cat being right behind that.
I'd suggest that if someone has a higher (over 100,000 miles) on their car, end-links are a big investment for such a small price (under $25 for both the front and rears). And to make the deal even sweeter, they are almost easier to change than changing the oil. Also, provided a good time for me to access the brakes for replacements.