I recently installed an H7B plate type cooler into my street Duster with a 408. I ran -AN 6 lines from the transmission to the cooler, which comes with -AN6 male fittings. Mounted the cooler in front of the radiator and ran it with my 3000 stall PTC converter. In 90+* heat, the temp did not get above 170*. I mounted one side of the cooler close to where the radiator mounting bolts are and the other side has straps bolted to the middle support bracket. Cooler is solid and won't vibrate. The H7B cooler is made in Mexico and is the same design as much more expensive coolers that have a brand name. Do a search for the H7B. You won't be disappointed.