Has anybody had any experience with these headers available from QSC and Sierra Madre? They are made in China and although Chinese parts generally have a well earned bad wrap, sometimes they make some pretty good stuff (AA Pistons/cylinders seem to be well made). They come in steel and stainless steel, appear to be priced very well and they come in 1.5" as a direct replacement to factory heat exchangers. I need to replace a heat exchanger that's damaged and is now causing an exhaust leak and thought these might be a good solution. If anybody has seen or used them let me know what you think.

Stretch