There is already an IAE mod out for FFA320 and for the Toliss Family, Also a CFM mod for the Toliss Family is already available. So there is no need ffor another IAE,CFM mod.
IAE:OFFICIAL - IAE Engine Mod - Heavy Metal - X-Pilot (x-pilot.com)
CFM: CFM-56-5A Engine MOD for Toliss 319 and 321 - Airliners - X-Plane.Org Forum (x-plane.org)
Also dont forget, that different Airlines uses different Pylons, so not all mods are wrongly modeled , just because you compare it with some pictures and they look different.