Applying different modifier to attack rolls

[bodrin]

I'm trying to swap the Dex mod for the Wis mod on all ranged attack rolls but

I can't find any code examples that show how to implement this. The modifier will be applied by a feat and not a class.

The weapon finesse feat seems to be similar but that only applies to light weapons and doesn't actually alter the attack bonus, I think it relies on the player to remember it.

Any ideas?