absolutly agree with moze i went through 5 fully built 60's with only 480 hp they would last may be 2-3 months i finally bit the bullet and put a 8- in is and have had NO problems going on 5 months now (knock on wood) but they are more expensive to build but for a very good reason and if you gety one get one out of a 02 or newer cause they have a better fluid routing system in them