My 95 civic is getting a diy face lift, and I'm wondering if its okay to fill in the two tracks (one on either side of the roof) with bondo. Make it streamline. I just want to know the likelihood of the bondo cracking in these spots? Please help. Time sensitive.

 

The two lines on your roof with a weather strip?

Don't fill it up with bondo. It will crack and look horrible.

If you really want it goen, weld it up and then a light layer of bondo.
Otherwise, it will crack with all that bondo there. I have seen it in person and looks horrible.