Since your Redline is 2800 @ 55 mph with 24.7" tall tires you must have the 4.05 final. Don't junk your trans until we talk. My L200 is 3000 @ 55 mph with 25" tires in 4th gear.
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02 Saturn L200 5 speed- 265k miles
84 Gmc 6.5 na diesel K30 4x4, TMU
2006 Lincoln Navigator, 215k miles
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