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So how many folks are still on the 4.08 FD?? How crappy is it on the highway spinning 3500RPM @ 80 MPH??
I am struggling to find s 3.69 and do not want to go as low as a 3.54 from the Q45.
Highway speed calculation @ 3500 RPM in 6th with a 25" tire (255-40-17) is right at 80mph. Thats a bit much
With a J30/3.91 its 3350 @ 80 MPH (80 is the target as thats pretty much highway cruise speeds around here)
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