solaris22 wrote:The HKS (or any race proven counterpart) has a significantlly less likely of a chance to fail then some other $200 product, end of story. If your good with a welder and don't mind having a fairly high chance of being stranded at the track/highway/country road/ect... By all means buy the ebay manifold, if you want piece-of-mind with a race proven manifold such as hks or full-race, spend the extra cash. But who knows, the cheap manifold might be the best thing since titties and beer, however I know of a few folks over here that have it and it's cracked more then a few times.
I do not believe it has a "significantly" less chance of failing. The construction is VERY similar. It would come down to specific welds and that type of thing. It's not a complex device, it's a Header. It would be completely possible for the makers of the "ebay manifold" could completely mimic the construction of the more expensive brands, therefore give it basically the same reliability. I personally would not have any excess peace of mind with the HKS than a cheap one. Except with the cheap one I can get it replaced with the warranty, with the HKS if it breaks I’m screwed. I'm sure there are many people with both manifolds who have had them crack on them. It's not scientific by any stretch. People here have the expensive brands and they've cracked, and people have the cheap ones and they've cracked. The cheap ones are less expensive, and have a warranty. It's obviously the better deal.