Motor swap?? Or massive motor work. Port and polish the head, cams, bore and stroke, lighten and balance everything so you can rev to 9k, through some high compression pistons in and you are good to go. All of that would cost probably three times a turbo kit and would yeild half the power. Bottom line, 2 liters stink for performance, but do what makes you happy. A nice direct port set-up could be installed, run a 150 shot.