Fiberglass over our plastic panels?

Hi folks,

I searched the forum and didn't find exactly what I was looking for, so here I am with the first of two questions.

First, the Dart Sport I picked up actually has all it's plastic panels, and are mostly good with the exception of one cracked sail panel. All plastic parts, though, like the pillars and kick panels, have divots and nicks and such...you all know the drill. So my first thought is to use fiberglass resin and fabric on the rear of the panels to add a little strength, then use fiberglass resin to cost, rebuild, repair the outer faces. I'm not going for factory correct, more of a "just for me restomod/restoration". My main concern is that the heat released from the fiberglass resin curing may further damage the plastic. Thoughts?

I considered just using Bondo, but I'm really not sure about how well it will adhere to the original plastic.