Post Pics of your M6 Shift Knob
Both 5th and 6th are overdrive gears. Stock, yeah it would top out in 5th, but if you had enough power, 6th gear would be the "fastest" one.
Also, there's no room so squeeze it in between 4th and R
The Best V8 Stories One Small Block at Time
Excuse the glare its the best I could find.

Maybe with some paint you could make it look real snazzy for cheap.
I would paint the H pattern and numbers black I think itd look cool






