hey guys, im thinkin bout extending the swingarn on my 300ex. i think i want to go out 2''. so far my main concern is the chain. how do i know what length of chain to get if i did this mod.? will i have to get new sprockets also? if so what would ya recomend? im also wonderin what to do bout my shock. should i leave it in the factory position er move it back and get a longer shock? thanks fer any help fellas, nathan.