I will be putting a set of D0E heads (1.94/1.60) on my 90 5.0 next week. The heads use a set of the Crane 1.6 Energizer roller rockers. If you done this type of set up, are you able to use stock length pushrods or will I need to get a longer set? I want to have all the parts here and ready, but if I have to wait and measure I will. TIA.