SouthwestSuzuki.com is where I purchased it, had the best price by a long shot.
Yes, I'm some what concerned that the stock manifold will crack again someday. The problem with the 16V headers available is the CalMini ones are not smog legal and the Doug Thorley have some design element that concern me. They move the O2 sensor about twice as far downstream from the stock location and have it measuring only two cylinders not in the main collector.
Also note, my CEL never came on.
GlockGuy40cal, does your Sami have carb or efi? If it has a carb and no O2 sensor, I'm assuming a cracked exhaust manifold would have no impact on mileage. On a Sidekick with efi and an O2 sensor, extra air is a problem.