I just installed an aluminum radiator in my 55 dr. 150 wagon and have been given two theories on where to put the fan. Between the Radiator and engine or in front of the radiator. To put it on the "inside" I need to drain and remove the radiator and the 3 pulley set up and replace it with a single or even dual pulley. On the "outside" I just hang the fan and wire it. Any preferences you guys have. Can you think of any obstacles I my run into either way.