I assume this is on the 6.9? I know you are on a budget, but if it were me, I would really be trying to find a way to get some funds together and buy the ARP stud kit. With the 7/16" head bolts the 6.9 has, it can really benefit from the added strength of the studs. Do it once and do it right. I certainly understand if you have to choose between studs and eating, but the studs would seem to be the best bang for your buck for longevity with your build. I checked Rockauto and the were out of new head bolts for the 6.9 right now. Maybe your local International dealer?