I have a 88 ford f250 with a 7.3l non turbo diesel that i think needs some valve seals replaced. I have a top end gasket set for another one of my pickups which is a ford f250 with a 6.9l diesel. the question is,Will the valve seals and the little plastic oil shields in that kit fit my 7.3L ? Also i read somewhere that it's a good idea to put umbrella seals on the exhaust valves? thanks in advance