that's what I got. Should I start in the middle and work towards an edge?
I haven't installed mine yet, but here is what I've got planned on the install process:
1) Locate and drill holes for fasteners on lip only first
2) Use heat gun to shape lip to fit bumper properly
3) Use silver sharpie to stencil hole locations from lip onto bumper
4) Remove lip, drill holes into bumper
5) Refit lip onto bumper, install Christmas trees
I think that would be the easiest step-by-step for this. And I'm not sure about how to start fitting the lip either, it may work better by fitting one side and heating the part from one side to the other. If the overall perimeter of the part closely matches the Sonic bumper, it should line up after reshaping.