When my mom told me about fixing our 1984 Subaru with Bondo, I knew this stuff worked. I had minor damage on the corner of my antique truck that I needed to repair before priming and painting the vehicle. I asked some of the Napa gurus who follow The Motley Guy BTW, and Bondo wasn’t their recommended product for fiberglass. However they asserted it would work and be simpler to apply in this particular situation, so I paid $10 for a kit and recorded the rest. Check it out and let me know in the comments what you think! Cheers, ~TMG