On #7024 I installed a Fluidyne (laid down) and used the dual 12" puller model # FLX-220. The equivalent pushers are model # FLX-240, both available from Summit Racing and others.
A word of caution, do not use the supplied mountings (ties which go through the radiator core) as there are numerous stories of them cutting through the radiator tubes with vibration. I fabricated some U shaped brackets that sit over and under the main frame of the radiator. I also used some spacers to keep the shroud (and fan blades) spaced off the radiator a litle. I seem to recall the optimal mounting is something like 1-1.5" from the radiator core to allow correct air draw and flow.
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