I don't have a DXF of the panel. I was just using the free version of XPanel to try out and see how it works. It doesn't appear that you can export a DXF file. It will generate a full size template that you can use to make a panel or it will generate a scaled engineering drawing.
You can scale the panel dimensions to put into Solidworks from the Open EZ drawings here:
The pages are A-1 and A-2 for the instrument panel.
Another alternative would be to check the EAA solidworks forum to see if someone has one available.