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Wrapping/Projecting onto non cylindrical surface

Hey Folks,
I'm trying to wrap my head around (no pun intended) applying an extrusion feature to a non cylindrical shape. In my document i have created a plow shape with spline curves and extrusion directions which I need to cut out a shape (simple) and apply an extruded frame around it (not so simple) to recreate the part shown here.
In my head I had through the wrap tool would help me, but didnt know that it was limited to cylindrical surfaces only, so that pretty much stopped me in my tracks (Ok that was a train pun)
I tried to follow the following techtip
but its not working for me as easily as the video makes out, so wondering if someone has the time to explain how I could go about it or point me in the direction of a longer format youtube tutorial.My thought process was create an offset plane, sketch the shape I wanted and use the faces to first remove the cutout then add in the extruded feature with the wrap tool which I now know will not work. I then tried doing other methods by adding in extrusions and removing them from the plow with offsets but this is just a bodge and not improving my skillset.
Thanks
Comments
I reset the offset surface to a variable to make easy changes. The depth reset just makes this easier to see what you're doing. Make extrude of sketch from face to face. When satisfied with how it looks, just reset the variable 'text_depth' to what is needed and hide the the offset surface..
https://cad.onshape.com/documents/5fb5a1fb76f3afe1a24a7924/w/1cab66686e6b5cbc5f5cca94/e/73903f54e566c5166e4d44bd
Thank you for takting the time to do this, I learned a lot just following this example but im guessing this wont work for what I want to do based on how the offset surface works being 1mm away in all directions, making the offset surface smaller than the actual plow front face. When using your example to learn, I was able to replicate making an extrusion on the other side when the sketch was within the projected surface, but not when it was below it which makes programatic sense as it dosen't know what its extruding up to, but this is limiting me making the correct extrustions on the actual plow face