Aren't longer runners better for low-end TQ? Seems like I remember hearing the VQ engine team at Nissan saying something about that.
If that were the case, I'd say it would be a good offroad mod. Chances are though, you'd need a new intake tube and such.
I know Mr. Muffakka (Lowered Black Reg. Cab. XLT with Edge clip) had an Explorer 4.0 in his....