IMO all strokers should have the mod....esp if you plan on running 16+ setback and some of the 500lb+ motors and with 300+ hp and plan on running trips....... sooner or later your going to need it and if its been modded by Kevin the resale if you ever sell will be better too. Greg if you get a chance check one of his modded transoms and then go check one that hasn't ...or better yet drive one!..nuff said.