I`ve recently had my heads re-done on my 91` evo (crank breather) and I`m not sure yet if I like the results.My bro has a set of 94` heads (head breathers) that I can have very reasonable.Question is ,will this work and do I have to block them off or block out my bottom breather?My carb support would have to be re-worked if I have to use the head breathers and I really don`t want the hassle.What`s the story on this if anyone knows.