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Do you know in which I can see photos of the financial system k20 crank vs a effectiveness k20 crank so I'm able to know what it finally ends up possessing?k20a2/ k20a3 blocks Is there any significant dif. involving these two. I am conversing just the blocks. As in would a K20a2 block be a better option in sleeving about the A3? The A3 are so low c