I'm going to attempt to make a mold and fabricate an electric fan shroud to hold dual 12" aftermarket electric fans (eg Spal or Zirgo). I wasn't able to find any good solution on the market, and not having a shroud on the dual electrics I'm running now is causing some problems. I don't like the universal Flex-a-lite 210 solution mostly because the Flex-a-lite fans aren't great pullers (compared to the above fans) and the fans are integrated into the shroud, so a standard form factor 12" can't be substituted.
I know the people at a local fiberglass shop & they will let me make my shroud mold at their cost. Any future pieces after mine they can fabricate and will need to profit from, but the expensive mold-making will be taken out of the cost equation so I think it might not be prohibitively expensive if anyone else wants one.
I'll take some photos of the process, too, if anyone is interested. I hope it turns out OK, or I'll be caught on camera screwing up