Fiberglass pans

[oasis]

I am generally trying to find a mostly rustfree car for my next GL project as I was fortunate enough to do when I bought my 1302 in 2004. However, a 1303 has caught my eye. A visual inspection showed it might be a good candidate but it would most likely need pans.

Are fiberglass pans worth looking into? I wouldn't have to worry about rust and I would save a little weight. I'm just not too sure about securing seat tracks onto them. On the other hand, I have ridden in f/g boats under duress and they held up well.