Gear ratio?

[Hilbilly Jack]

Scoured the window sticker for my 13 Roush and can't find the gear ratio. I think it's 4.11 but does anyone know for sure? Checked speedo against GPS and it's spot on now so I want to keep it that way when the tune arrives.
Waiting on a tune from JDM and NGK's are on the way as well. Did the pulley route (upper and lower) on my 02 Harley truck but this one will stay at 8 Lbs. of boost. If I really need to get it on I'll jump in Momma's 625 HP GT350.
Thanks!

 

[03Cobraraptor]

4.10
All day

 

[BoostedToy]

If you are doing the tune, go ahead and toss in a 72mm SC pulley. It’s worth it.