I am prepping the car for a fresh paint job this spring. One problem area is the fiberglass header panel. It has half a dozen stress cracks in it, by stress cracks I mean they don't go all the was through 'yet'. it is also cracked and actually split open around the grill area . After reading a lot about the stress cracks I plan on opening up the crack slightly with a dremel and filling the v'd area with bondo glass filler. Is that my correct plan of action?
I am unsure what to use for the area that is actually broken though. I think I tried some off the shelf epoxy the first time but that failed pretty quickly. What should I use to glue it back together? Should I grind both sides down and then use bondo filler inside the opening along with some fiberglass strips behind it? Is there some particular adhesive that I should seek out?