Not Ranked
I still think with the OP's 3.46 rear that the .82 is probably better for him. BUT, if his engine builder says his engine will run smoothly, without hiccupping, at 2000RPM -- forget about accelerating, it doesn't matter -- and 2000RPM translates to a speed that he believes he will be cruising at on his state's highways, then go with the .64 gear. With my 3.54 rear, 2000RPM is 68MPH, and it's almost like coasting with the engine off -- very pleasant.
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