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When I started to fit the braces, it was obvius that the front bumper support had been bent at both sides. I dont have time to start repairing the fibreglass immediately, I am concentrating on trying to align the panels and braces better. But it looks like later this year I will have to learn how to patch some of these panels!
From the photos the damage to the fiberglass does not look too bad. The parts do not look like they are mis-aligned to one another, so it should be possible to clean it, sand it with a rough grain, apply epoxy and glass matting and more epoxy, on the inside. If the cracks are visible from the outside, apply some plastic padding with glass fiber fill and sand it smooth. When painting, apply a high quality epoxy primer that guarantees water tightness. Otherwise the paint might bubble up from moisture in the fiberglass.
I have fixed my bumper a couple of times that way and plan to mould the top and front to align with the body, so no rubber mouldings are necessary. I have seen others do that and like the look.
The bend frame is a more serious matter. I don't know if anyone has the frame measurements, or know where the alignment points are.
Good luck with it.