Well, I hope I didn't waste yout time AND make you late for work!
Wouldn't t be nice to be able to mail-order that U-Bend with the necessary flanges already welded on it, for a reasonable price, say $75.00-$100.00?
We spent $1,000.00 building our header and did all the work ourselves except for the welding and coating. I'm not even sure it will make more power than PISHTA's U-Bend setup.