
See what I mean? The Supra has a much smaller back seat and as such, a smaller rear window and almost no roof over the back seat. The 6gc, on the other hand...

As you can see, it has a much larger rear side window and a lot more roof over the rear seat. So to follow the Supra's design and make the cut in the roof straight up from the front of the side rear window, you would have a lot of extra roof left over on the car, and it might look a little unusual. Another issue is where to put the roof when it's off. The Supra allows you to stow the roof in the trunk. The Celica's trunk isn't wide enough to accommodate the roof. But as I said earlier, despite the possibility of cosmetic flaws, the biggest issue I see is support. The section of roof would have to be reinforced to keep it from flexing when it's out of the car. The rest of the car itself would have to be reinforced. It's nothing that can't be done, and I would love to see it done. It's absolutely one of my favorite features of the Supra. So get to it!
Edit: Another design flaw I just noticed.. You would be buffeted with wind and beat to a pulp if you put a targa top in a Celica. Look at the roof line on my Celica in the picture I posted above vs. the roof line on the Supra. The obvious place to cut the roof in the Celica is somewhere between the windshield and moon roof, but the roof is still climbing on the Celica. Meaning the roof at the front of the car would be lower than the roof at the rear. Meaning wind would be blowing straight into the car, and it would be blowing in pretty hard. The Supra, on the other hand, the windshield and rear roof section are nearly level with each other, so a lot of wind is deflected. A good wind deflector would be necessary on the Celica. Again, nothing that can't be done, but it's something that will need a lot of research.
This post has been edited by richee3: Jul 15, 2010 - 12:35 AM