headers

i have a 02 gt mustang 5-speed. looking for a set of headers. wondering which brands are good. and weather i should go with shortys or longtubes. and want to know what the real difference between them is. and i have 2.5" exhaust with flowmaster super 40's.

i am a college kid. most of my money goes to payments and insurance everymonth. i have enough to spend up to $450 max. i have cheap instulation (case of BUD LIGHT) from a buddy. so dont worry about that in the price.

thanks for any advise.