Not sure on the newer tours, but on the older ones it's not hard, just a bit troublesome getting it all back together. Hardest part it getting the springs streched back into place. Check out the Haynes manual for our cars. It gives step by step instructions and pictures!! not sure if having ABS makes any difference though. Mine has ABS and took me about an hour per side using the instructions in the manual.
you can get it at the auto parts store for around $14. Good luck
