But before my pipes got to where they are now, I (like a fool) welded the H-pipe in before I finished the rest of the build. Learn from my mistakes, weld it on after you finish.
The other problem this caused was a bit of warping of the tubes. Ended up not lining up with the headers and the tail end didn't go straight out the back, but some what wonky so I had to "adjust" them. Using a few blocks of wood and my 3 ton jack, I commenced.
Doing this, of course crushed the ends of my pipes, so, I just hacked them off and welded new ones on.... problem solved. everything lines up nicely and we are back in business.