I ran across this picture:
We have discussed box cavities before and members without hatchbacks have tried to work around a trunk. Christofu worked on his
Aero Hitch Box / Boat Tail for exactly 2 years, but it failed spectacularly, and apparently he fled the country in shame. It seems he identifies this as a 2000 Corolla and, at least at some point, he owned it:
That is from his garage. I used AI to enlarge it, Google to brighten it, and Gimp to attempt to delete the watermark.
Metro commented that he was building a cardboard Kammback for his fancy Civic, but he restored it to stock in the spring and sold it.
I just wondered if anyone else had made a cardboard Kammback.
No, not really. Just Darin on and off for over 15 years on various sites.
Google showed some boat tails, but all of them were posted here, although some were shared elsewhere.
Here is Metro's Kamm back and boat tail:
What if you removed the trunk lid and welded a box, like on the Mercedes, but approaching the Template, put down fiberglass on the back window (over axle grease), shape a fairing with Great Stuff, and then fiberglass over that?
It looks like you can only add about 6", but more storage, and better aerodynamics?
I am thinking about something like this:
I'm not saying to not fill in the bottom, but maybe actually use that for a bumper?
I don't know if I have mentioned this before and it might have been 8 years ago, but I have long visualized pie-cutting a 4" sheet of foam to form the bottom of a boat tail\bumper.