thanks for the info. right now i have chain-links on there, so i was thinking to get another chain-link to attach it. i haven't ridden much since my knee injury, put about 200 miles at most on the bike and it's been sitting there. so the chain should be ok. just not sure if using additional chain-link is safe.

also, how hard would it be to adjust the rear derailleur after i put the parts in. that part i have no problem with, just the adjustment part i'm a total noob.