I would use the black no threads. I was aware of the same dimensions. I think your right the conduit uses straight threads. I do not think the originals were ever made from galvanized though. Even though it would look good and last longer. I never bent a large pipe into the shape needed. Does anyone have any experience doing that? Also, were the originals black in color? All the ones I see are rusted.
Last edited by MORE RUST; Thu Oct 29 2015 12:14 PM.