My car needed all that (chain, rails and tensioner) and every shop I called wanted at least 700 for it. So I said "f%&# that! Not for 150 bucks in parts!" So I did it myself! As an amateur! Got 'er back together and all 3 timing marks are right on the money. If I can do it, most anybody, except for the most mechanically inept, can do it. There's even a spectacular webpage on this procedure, that explains everything but the chain itself, but after you've done everything that's on that page, the chain isn't much more. Check out this webpage
by thomaspin....can't get much better than this.