Packaging is the big thing. If you're installing a fabbed column, and/or moving the driver back in the car, there's more room. As Chris says, I'd think a quicker box would be the way to go. Perhaps something like this:
Sweet steering gear^^ This of course, would be for a 3rd Gen. You'd have to research a new rack for a 4th Gen.
That, and/or change the length of the steering arms.