I put the F-body radiator last August when I had the stock clutch fan. I have an 85 GN(GN is only a body option-We are all really Regal TTYPE's). I bought a Modine 951 from NAPA(They have a cheaper NAPA model). The install requires the removal of the fan shroud. The trans cooler lines can be manipulated and will fit into the new radiator. The upper radiator hose has to be relieved from the IGN module bracket. The rubber hold down gromlets need to be moved to the drivers side. The remaining issue for me was finding a hold down bracket for the drivers side of the radiator. The f-body radiator is about six inches longer than the stock one. I got an 87 Cutlass 307 radiator hold down plate and cut it down. Direct bolt on. If you are staying with the clutch fan you can have my bracket for free. I am now in the process of converting to the electrc fan. I will gladly send you PICS. Brad