How do I loft between faces instead of between sketches?

Hey everyone!!

Basically I've got two different extrudes in my part that are too complex to draw as sketches and then loft between the sketches, using a guideline. I've had a quick hunt around + can't find anything that describes how to do what I want.

I've attached the file which probably makes is more clear than what I've explained, basically the two extrudes at either end are what I want lofted together + the 3D sketch that's just hanging around is the guide curve

Thanks very muchly!!

Laura

SolidworksParts And Features