Auto body repair & detailing: replacement fiberglass panel, international scout, fiberglass panel

Question
I have an international scout and want to replace the rear quarter steel panels with fiberglass panels.  What's the best way to mount and is it easier to replace than the steel panels?

Answer
I guess my first question would be are these racing quarters that you would want to be easily removable or are you trying to do a restoration?The fiberglass panels wont hold up if you try to bond the glass to steel,you will eventually get cracks.If you are going for the off-road rally look you can make a strip of metal to attach dzus fittings to make them removable.These should be available thru summit.