I had to go through this debate in Nov myself for my wing install. I was hoping it would be easier to find a base model hatch to trade than just have mine patched.
After 2 months of no response, I said screw it and just had them remove the stock spoiler. The benefit to this is my hatch has the same VIN as the rest of the car, which if you traded, yours wouldn't. If that doesn't matter then no biggie, but if something happened, it might make the insurance people squirrely, which I didn't want to have happen.
I will say that having the stock sport spoiler removed is a bit of a hassle as it has 11 mounting points that would need to be patched. Didn't expect that, neither did the body shop.
Just some things to think about...
Hope you find someone willing to trade with you, so
and GLWT.
