Hi
I'm new here but i want to point out my observations :)

The model is nice and the materials are great :) Not sure abaut the position of the wheals they seam to low, but i don't know much abaut...

Hi :)

In this case i think you can delete one curve and duplicate the other and move it up and loft.

They look exactly the same.

That would be the best way. But for futer you need to think...