i remember when i had my honda liquid cooled and when the fan turned on in traffic at a stop light it, got damn hot with the fan blowing back on my legs. it was actually hotter with the fan blowing than did my stock 07
Check LeNale Engineering they make muffin fan kits that are much smaller than the H~D fan. Air flow with the LeNale fan is supposed to be very good and it's about the size of the OEM cow bell horn cover. The same company makes oil cooler fan kits and I have been very satisfied with the one I installed two years ago. I have seen the LeNale fans on eBay and at Whitts H~D in Manassas, VA. I have heard mixed reviews from folks with the H~D fan kit. Hope this helps