I bought new ones. They are expensive but real nice and since they are at eye level they are so visible. IF you absolutely want the polished look use NuVite.
Heads are easy but it may need rings etc...
You may be better off pulling and honing re-ringing and then heads.
Eboks and Trick flow are great bolt ons.
OR...............
Buy a nice FI 302 and drop her in!
or...
I just don't understan why. I needed the space so i was forced it was a lot of work. The arm can be obtained fromt he donor but it was so different in my case it was easier to fab a new one. I just don;t think you gain anything. There are so many other areas to focus on