I was just going to place my order for endlinks but i got confused between getting the newer ones or the ones specified for my car.

I have a 2003 Coupe, so i went and selected the part numbers for my car and they were:

Front Driver: 54668AL502
Front Pass : 54618AL502

Rear Driver: 54668EG02B
Rear Pass : 54618EG02A

and the newer ones from a 2006 coupe,


Front Driver: 54668AL502
Front Pass : 54618AL502

Rear Driver: 54668EG01A
Rear Pass : 54618EG02A


So they are all the same part numbers, except the rear driver one, now my questions are:

1. Should i go with the newer one or get the old one?
2. Will there be any fitment issues with the new one?
3. Only my rears are going bad, should i just go ahead and change the fronts too just in case?
4. Does changing these affect alignment? (need this question answered only from someone who is 100% sure on the answer please)
5. Easy diy or get a shop to do it? never done any suspension parts before but from what i saw it was only 2 bolts. need to torque them?


Thanks a lot guys, i searched on this issue but could not find any part numbers so just want to be sure before i order them.