Front Suspension Problem

Hi, I have a 2007 Honda Pilot with about 75,000-80,000 Kilometers on it. I don't know how many miles that is, but I know that they have been very rough on the suspension because I live in Nicaragua and there are many bad roads. A couple months ago, I noticed a strange sound when passing over speed bumps with the front wheels. I can tell that the camp bounced more than normal and seemed to not handle speed bumps well at all. Even at very low speeds. Anyways, I asked a mechanic at a shop to take a look at it. He said the front right "amortiguador" was bad and recommended changing the two front ones. The translations don't really work, but I'm pretty positive that this is the struts. There seemed to be liquid or oil leaking out of it (not just a tiny bit). Here in Nicaragua, getting service done at the Honda Dealer is very expensive, not to mention it is 1 hour away in the capital city. The usual process is to buy the parts, then take them to a local garage. The price of the two struts at the dealer is nearly $800, and after a quick look online at Advance Auto Parts, I see that the parts are much cheaper from the states (About $105 apiece). My first question is: Are the front right and left struts two distinctly different parts, or are they the same part? Advance auto parts had a listing for the front right, but not left. I am assuming the parts are different and that I would need to buy a right and left strut and not two of the same. This led me to go to the KYB brand struts online catalog. They had listings for five parts for my vehicle. Front left strut, front right strut, back struts (assume left and right are the same), "suspension strut bellows, " and a "suspension strut mounting kit." My question is this- If I were to get my 2 front struts replaced, what parts do I need? The left and right strut is assumed, but would I also need the "suspension strut bellows" and "suspension strut mounting kit?" Also, the back suspension feels fine on the vehicle. It would not be necessary to change these at this time. Right? Thank you so much!