For those applications that need a little more clearance, this fan shroud and brushless fan for C&R downflow radiators may be an option. It allows for about another 1/2 inch of clearance over the Spal 30102052 dual 11 inch fans. It even shares the same mounts. The Spal brushless is a variable speed by engine temperature and come with all the wiring harness and temp sender. Spal brushless soft start, meaning they only pull 3 amps at start up and up to 25 amps at full speed. No relay is required.