That is just the size Crane has. I have read that people use them, but you would have to shim, probably. You really need to measure your setup to be sure of what you need.
I didn't know that you could get 6.310s off the shelf from someone else. After replying to you, I saw the other thread you posted on. Lots of good info there. Go by what they tell you, as I have only researched and have not done the install yet.
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