I had bought a set with no flare. My recommendation would be to strip the coating off, then weld them all up. The panels are just spot welded. Within about a month I had rust residue blowing down the side from the top panel and tube. My buddy just bought a set of the 3" flare tubers and IMO are on the poor side of quality, big gaping hole where top panel meets downword portion of flare.
Mine looked cool though. I ordered them when 4wd hardware was having a free shipping and 25% off sale.