Underdrive Help

[2klaseredstang]

I am gonna order asp's underdrive set for my car except there is 2 sets for year 2000 cars i popped the hood to see which set i need (the late 00-04 or the 99-early 00) but am still a little lost i think i need the older set but i am not sure. my car was made in feb of 2000 which is right in the middle of when the cars are manufactured does anyone know which set i need to get?

 

[JasonVMP]

This picture may help, you dont have to take any parts off to find out if what pulley you need for your year. Look and see if this could possibly fit.