Changing my trans filter and fluid...need help

[ivorton74]

Decided to try and change out my trans fluid and filter this weekend but i'm kinda stuck. The oil pan is stuck...the back of the oil pan is hitting on the valve body so I cant get it out. Also I bought a trans filter kit from napa and the filter is different from the one in my trans...the one in my trans is square and the other one is actually the shape of the oil pan. so how do I get my trans oil pan off? also would that filter would in my transmission? its a th350

new filter looks like the one in the pic...