So I was just reminded recently that about 10 years ago, there used to be a company up in Toronto called RevLab who provided tons of products and services for the Subaru/rally community. This included a lot of machined products from solid outrigger bushings, steering rack mounts and quick steering quickener modifications.
I used to have a very elusive limited production batch of mounts that replaced the bushings and brackets on the steering rack. It was a machined aluminum bracket that took up the inner contour of the compliant bushing, however, there was a straight knurl applied to the surface to allow it to deform just enough as to self-clearance and provide the perfect snug fit.
Since there isn't a Maker section in this forum, and there are several very capable fabricators/machinists/product developers...
Could one throw in a request to see how difficult a product this would be to develop? There are kits for NB's that provide solid bushings on the driver side, but the passenger side is left neglected. Or there are always the urethane bushing replacements for both NA/NB
I can't find my old images as they've disappeared into the bowels of internet archives. Rough idea, but the inner surface would meet the contours of the steering rack with a straight knurl.