That's what my other fan shroud had, but smaller fans as well. I couldn't get it to cool in hot weather cruising down the road at any speed(218*). When I stopped it would cool down to the 200* range + or minus. Seemed like it wasn't getting enough air flow at speed.I drilled more 1" holes and added more rubber flaps to no avail. Couldn't figure it out, so back on went the mechanical fan. Cooled just fine. These Spal fans are the paddle variety and move much more air. Will see, fingers crossed.