Hawk pads are best.
http://www.hawkperformance.com/truck/superduty.php
Best rotors for a decent price. Im sure sponsors on here can get them cheaper.
http://thmotorsports.com/i-277775.aspx?utm_source=GoogleShopping&utm_medium=CSE&utm_content=2777752005FORDF-...
Im using Rockys old push rods in my cummins.
My international uses stock push tubes though. Seem to work like international intended.
If your swapping push tubes for push rods in a international v8 your an idiot
Some have problems some don't. More likely to to have problems the longer you keep the rpms higher for long periods of times. You could stay under 2500rpm. But 450 550s are ment to carry all the time. So that could be a factor. A weak injection pump will cause crazy prolonged regens. A city...