boost

hey all i am interested in adding boost to my vulcan and want to know what my best option is. im leaning towards a turbo charger over a super charger, also what parts i would need minus the obvious (turbo,header, ecm, tune) and what injectors would be best.. id like to be able to boost about...

so i no for the 4.0 sohc u can use an eaton m90 supercharger and im wondering if i can use that on the 4.0 ohv engian or if there is another brand that will bolt on?? ne input??