FSWerks exhaust (located in Anaheim) - http://www.focussport.com/exhaust.htm
SVT suspension - http://focus.c-f-m.com/fordracingsvt...0-05focus.aspx
You would need to get the rear sway bar bushing kit also - http://focus.c-f-m.com/prothane21mmr...0-06focus.aspx
And strut mounts/bearings from Ford.
Tire Rack has a good amount of wheels on closeout that would be within your price range but then you need tires also - http://www.tirerack.com/wheels/resul...All&sort=Price
Short throw shifter - http://focus.c-f-m.com/cfmadjustable...ocuszetec.aspx