with the toda package it raises redline to 9 and make 30hp wiht jsut cams doing it but it shouldn't hurt him to bad as long as u keep checking the engine my 94 gs-r has been beaten on forever been to 8 grand everytime it ever got warmed up and lots more and i've seen my dumbass brother miss 4th at least twice and watch teh tach go voer 9 and the engine still works perfect