This came from Gilbert Propes, noted musclecar restorer, in a seminar he gave. Instead of the staples supplied with the shields, use 18 ga galvanized floral stem wire and cut and bend it to make staples. It's much easier to bend and work with and looks like factory staples. I did this with good results. If going in steel inner fenders use the factory holes or, if new IF's, pre drill the holes. Most original unrestored Chevelles I've seen have the shields on the engine side of the inner fender (factory method). I think it looks better with them on the tire side and many show cars have them like that.
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von '69 300 Dlx SS Murphy's Law is always in effect