Guys with 31's, 4.10's, and 5spd manual...rpm question

[4x4Ranger]

Guys with 4.10's, 31's, and the 5spd manual (.79 5th gear)...

What RPM are you turning at 65? How about 75?

I did the calculations and theoretically it's 2282 RPM at 65, 2633 RPM at 75, but want to verify.

Thanks

 

[Downey]

that should be damn close i have 3.73s and 31s 5 spd and im right around 1900 at 65