I did this a few years ago for about $20 and some spray paint. There is a picture in my gallery (if it doesn't show in this thread) to help convince others who are on a budget too!
Yours turned out great. I'm still hoping to do this soon. I have my old fiberglass running boards off, and just need to start cutting. I'm a little nervous about it. I need supervision! ;-)
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YoTerryH
2001 Ford Econoline E250
GTRV camper conversion