Unless you like repairing oil leaks, run. We just got rid of just over 100 C7 powered school buses due to excessive repair costs. Everything from the valve cover to the oil pan, front gear cover to rear main, if it’s got oil touching it, it’s going to leak. You might as well grab a HEUI pump and a water pump while you’re at the CAT dealer. Also a set of injectors, cups and seal kits. Oh, and the special tools for them, too.