wiring schematic for dual radiator fans.

Its actually pretty amazing that the bolt circle, and thread pitch for a 1990 jaguar 4.0L 6 cylinder on one of these would be spot on. Can i assume then that it comes with an adaptor bushing in the box with it ??

Found one on rock auto for $30 plus $9 shipping, and all over evilbay for about $40-$45