No shit, Buckwheat. With the exception of the intake manifold this can be done.
As far as why people build upper end N/A engines.....because they want to see how far they can engineer and push the package. The 450 N/A mark hasn't been eclipsed yet. Why not give it a shot. Or...this could be a lead in experiment to put a 3V engine into one of the N/A classes at NMRA/NMCA or the Ram series. There is a certain satisfaction in building serious N/A power. The engineering, technology, and parts are where that satisfaction comes from. You can't just swap pullies or turn the knob on the boost controller.
Finally someone said it