need tranny help got a few ?'s

ok i decided maybe i could get more if i just put the tranny in then sold it. well i get the tranny home and the old one out and get to lookin. the one in the car says on one sensor that its a km175 or w.e. tranny it is, then on the serial # area it says f4a22, then some mumbo jumbo. on the new tranny every thing says f4a22 and has a few extra hook ups. anybody know whats goin on here? i thought the 2.0 had the f4a22? ill get pics up tomorrow so you can see clearly what im saying. sorry if its confusing "im just a little tired and a little wire."

any help is appreciated.
thanks,
trent