im actually curious about this too. im sure some more folks will chime in. another place i use for info about my inlines is
inliners.org
click on bulletin board, third one up from the numbers, and theres tons of helpful inline info there.
when i go to autozone or oreilys, now i just take the part with me. i dont like having to hassle with driving home and finding it isnt the right one, or it wont fit, and your self aligning vs. thrust is a mystery to me tho.
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'69 c10 longbed granny 4spd 292 "Behemoth"

'67 c10 longbed granny 4spd 292 "Burzum"
some pictures of my work in progress
http://photobucket.com/zaeea
R.I.P. Corey "Flattus Maximus" Smoot 11/3/11
You will be missed. Your sound lives on.