'86 200x (just got it and have a few questions)

[yater]

I would like get a new chain and eventually sprockets front and rear. Any recommendations? I'd like to do it right--is O ring the way to go? Also, I'd like to have a spare set of sand tires and rims (rear)--what sizes work best?

[yater]

What size chain and how many links?

[350Xccelerator]

i got some 22x11x10 kenda dune runners as spare sand tires for my 350x, and i really like them.