[itstock]

With the 427 I would do the 3.46 unless you just like spinning tires in 1-3, and in that case, go with the 4.11.

If I had the Coyote I'd do the 3.91 or 4.11.

I have the 3.15 rear and spin too much in 1 and 2 during normal driving with an engine similar to the Roush 427R, but when the tires are heated up I start thinking that the 3.46 would be nice.