^the replacement for displacement is boost.
OP - really depends on what you want it for. I've gone down that road many times over, and had the first stroker kit GTM did back in the 350z days. Feel free to PM me any questions you have. I've actually DRIVEN a GTM stroker kitted car (mine) for over a year through all conditions (track, street, backroad, hot, cold, daily driving, etc).