Hi Chevys, may be you help a Jeeper again. I just want to build in a chevy radiotor out of a '89 Pickup in my Jeep with a 5.7 SB(reason:Stock radiator too hot!). I never have seen where the original hoses are connected. The upper and lower main connections are no problem, but the little one on the left side,( when standing in front. ) I think this is for the heating. Now, how to connect it ? I want to go this way: Output engine to input heater, output heater to radiator. Hole in waterpump closed with 1/2" plug or a T-piece to go from output heater to radiator and waterpump. ( if waterpump is heaterwater input !!!) What would you doing, how is the original connected ? Bengt PS: The radiator is with transmission cooling.