Roller rockers just plain work.Less friction ,lighter weight(exp alumin) and no they dont have to be changed in a street engine.I have many sets out there with over 100,000 miles on them.(one set is in my snow plow truck now for over 10 years,racin rejects)BUT those mag racker are rare and a great coffee table item,dont use em .Nothing wrong with the stock steel not many fail ,just wear out(even then they are fixable).leave em inn the box neat item to talk about,but of no use in your 150 hp 235.really cool find!!!!
