The SSAutochrome manifolds I saw were terrible. Every single one of them. The design is bad. The workmanship is bad. It looks like they just grinded down some pipe and welded them together.
If you're looking for a cheap alternative, I recommend staying with the stock cast iron manifold. If you really insist, try the Megan Racing manifold for $150. Those seem to be okay. The first-gen had some cracking problems, but they fixed that and the second-gen doesn't seem to crack as badly.
Or if you have the money, HKS for a grand
