1. Free from me if you were here in QLD.
2. I have just got standards, Id suggest something like a bendix titanium strip.
3. What are you looking to rebuild? Do you need bearings? You can get bushes for the shifter, If you can't find any look for t50 shifter rebuild kit.
4. On a K series motor its not really worth it but each to thier own.
5. Dunno.
6. Local bearing shop, Should be a part number in the FAQ.