I have just called Walker Radiator and they have a Z-511 radiator that is about 750.00 this is a copper brass radiatior. I asked if they have had their radiators in a truck that style that has a big block. The rep that I talked to said that they have it in the Gravedigger truck pushing 1500 horses. This one could be the right fit. I know that the Gravedigger is the same style but I have not done any research to see how it is built and if they use the factory style front clip and factory radiator location. Maybe this will help someone out there I am still trying to get the money together to purchase my radiator. Everything is somewhere in the 650.00 and up range so it may be a while before the radiator gets bought but you still have to plan out everything and know your options.