6 Speed

The 6 speed is a double overdrive isn't it? You would have to purposely build the engine for 1000 rpm at 75 mph in 6th. Lol

2500 rpm at 85mph... we have some roads here in Texas with 85mph speed limits. This ain't Oregon. I'm still debating if I run 3.54 gearing 3.73, or 3.90.