I've bought from Dan Williams a few times in the past--yes, a very nice guy with a lot of knowledge (in his 70's I believe), but you better have some spare time on your hands, because the old guy will talk your ear off.
Kee's and Williams' kits are $150, which is a fair bit more than some, but worth it if it has the metal thrust washers. I find plastic an unacceptable substitute.