Which dual spals? Did you get it from ramchargers? I just got mine from ramchargers and installed it last weekend. I had to use a dremel and cut off the four mounting ears. Then it fit perfectly between the radiator end tanks and I drilled a couple holes in the top and bottom of the fan casing and tie wrapped the fans in place. I also didn't bother with ramchargers connectors. I simply wired the old connector from the OEM fan into the wires for the spals. Works GREAT. Just connect ground lead to ground lead and al lother leads together (I don't use slow speed fans. I want them on high whenever they are on here in Hawaii)...
Derrick