The 1 inch OD "L"s are from Woolf aircraft products (full scale stuff) and run 20 bucks a pop. After forming, they are brought back to 6061 temper. They come with 12 inch "legs" that need to be cut down. Got that done. All work here is done with hacksaw, file and "Unibit" from harbor freight. This is what I accomplished today after work. I'll have to "build up" (with the TIG welder) a bit on the inside of the Header plate on either side of the .88" tube ID to properly seal along the edge of the more or less square exhaust port - but it was easier to drill and fill, then try to form a square out of the round pipe and screw with the wierd hole in the plate. In the other direction, a diamond burr will let me "blend" the exhaust into the tubing. Really no better or worse than the do-it-yourself stuff from KS, and probably a lot stronger. I drilled all the holes in the plate before cutting apart with my hacksaw so it would be easier to handle. No machine tools in my shop!!
