many syty owners have had good luck with the dual ramchargers efans which are now made by allstar.. they also came as oem on dodge intrepid from 01 on I believe. I'll post a link to what im talking about tomorrow for you
They work great and are dual speed.. Caspsers does make a toggle switch plug n play harness for this fan as well but it's like $90 I'll see if I can find the link to that I have it in my mustang