This post is probably a little late but that is the same eBay radiator I have installed in my 01 with the 5.0 and yes the transmission lines need an adapter or modification. The eBay radiator has inverted flare female fittings on the transmission cooler. That is different from the ford transmission flare ends. What did was bought 2 inverted flare fittings from the parts store, cut off the oem fittings and re-flared my transmission lines to match the radiator. I already had the double angle inverted flaring tool, so it was very easy for me to do. Well worth the upgrade! That radiator can get rid of heat fast!