Ok, well i know that not many, if any at all of the 1500 trucks with the 4.8/5.3 have a factory engine oil cooler, like mine has the aux trans cooler for the towing package, but no oil cooler.

Over the turkey day holiday i bought a radiator and e-fan setup out of a 2007 Silverado, and i want to swap it into my 03. The radiator has and engine oil cooler built into it, and id like to know what parts i need to hook it up.

Also does anybody know if the 2007 NBS radiator will fit into my 03? It looks to be about the same size, and the mounting on the upper core support is the same.