How repairable are a set of overhead 4.7 heads? I'm thinking about picking up a set and having them ready just in case ... Looking at this thing on the lift last night for the first time since I brought it home, I see the upper hose has been replaced but the lower is original,and so are the heater hoses/I'm gonna have to add those to my next rock auto order ... At 20 yo they've been on there plenty long.
