performance at 180

hey all i was wondering what performance gains would i get from a 180 thermostate its only 10 bucks so im not expecting musch but what should i expect

Absolutely ZERO.

Unless you have custom PCM programming (SCT), there is absolutely NOTHING to be gained (except INCREASED fuel consumption) from a colder thermostat.

Also, I STRONGLY suggest that you use ONLY the OE thermostats (Ford/Motorcraft).