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I've got an excellent fabricator in Howell and he's got the right equipment for the job. He's just busy as shiat so it might be tough to fit into his schedule.I thought the same, but some concerns:
1. the sheet metal on the slipon's is thinner than 16 gauge. a standard brake may work on thin shit metal, but not on 16 gauge
2. the slips dont extend on the bottom to the inner panel.. i would need to extend the full length underneath
3. maybe use as a template to create 16 gauge replacements, but it will take a heavy duty brake. unless i can find a shop that has a hydraulic brake.
I'll take any suggestions...

Those look damn close to the right fit. Where are the differences you're seeing?

20170723_124110 by Dave H, on Flickr
20170723_124302 by Dave H, on Flickr
20171203_145923 by Dave H, on Flickr
20171203_150027 by Dave H, on Flickr
20171203_160102 by Dave H, on Flickr
20171204_143709 by Dave H, on Flickr
20171204_143714 by Dave H, on Flickr
20171204_143721 by Dave H, on Flickr
20170723_125104 by Dave H, on FlickrBecause you shouldn't weld galvi. Fumes are pretty poisonous. Also, once you cut galvi, you remove the galvanization. It's a coating more or less.This is probably a dumb question by why wouldnt you make rocker panels out of galvanized sheet metal like duct work is made out of? It would have much better corrosion resistance.