Sorry CaryT you need 1/2" lines , the stock lines are 3/8" The install is very easy I have posted a how to many times on the forum. The easiest way to pull the old and install the new is from the top. I didn't have the rad cooler, so basically pull the rubber cover off the top in front of degas bottle, pull the bolt out of the bracket that holds the right side of the AC condensor to the truck, this will allow it to flex out of the way, now pull the grill off ( 4 screws on top, and 4 spring clips down under) I also pulled my hood latch, with a long extension remove 3 of the 4 bolts holding the cooler in place, crawl under truck, place vice grips on rubber trans lines to close them off, cut the rubber lines close to the cooler, remove 4th bolt and place a rag over the top of the condensor or you arm will look like it was in a cat fight, pull cooler out from top, install new cooler, fasten with all 4 bolts. Now go back to where the hard line ends on the frame and follow the rubber lines, stagger your cut's about 4" apart and cut the soft lines and install your brass barbed adaptors that are 3/8 on one end and 1/2 on the other, now simply run your hoses the way you want and zip tie out of the way. There is no flow direction to a trans cooler, but the factory plums it with the inlet on drivers side. If you have the cooler in the rad. The only difference is where you covert from 3/8 to 1/2 you will do this between the rad and trans cooler on the inlet and on thew return it will be the same as without the rad cooler, ( close to the metal return line on the frame). Maybe someone can put this in the tech files. If you have any ? PM me
NCH