Ok I have an option of two trucks both f250. First being a 99' 7.3 that has a programmer on it. Has 213,000 miles, second being 2004 6.0 with no upgrades to motor what so ever. No delete no head studs. Notta thing. Has 258,000 miles. So which way do I go and I have no money for repairs as of now. Which do I depend on. Or should I just stick with a gas motor with 145,000??! Thanks for all the help I can get.