Typical path is get sharpest lens you can and mount it on your Nikon.
Another path some explore is put Nikon mount lens on body equipped with Foveon sensor that has been modified to take Nikon mount lens, like Sigma SD14 aka SD14-F.
Below is one pic from CV 58/1.4 mounted on SD14 body. That is downsized, 100% size is at http://zart.zenfolio.com/img/v6/p800721951.jpg.
This is at F2. What you think of it's sharpness? Worth getting that body for it?