yea but tons of people have boosted their cars using rewelded and braced the original manifolds which are were made out of the 304 steel...and the 321 is stronger and has a better heat resistance...so I don't see why it wouldn't work with the 321 stainless one as long as it's welded good and braced...I'll give it a try. If it doesn't work and it cracks, I'll have it rewelded and then I'll sell it. I could buy this and have it rewelded 6 times before it equals the price a good custom ramhorn...ya know what Im sayin?
i understand what your are saying about cost, but the reality is you are going to have more hassle than its really worth.
what are your power goals? a log can support 300+ easy, just look at Bizzar's setup. even a mini-ram can support a lot more than that. then there are always the Drag style manifolds that have been proven time and time again to consistently make power. all 3 of those options are cheap, and would run you most likely less that this ssauto knockoff.
guys that i know personally that have ran the ssauto manis, complain that they have to be re-welded WEEKLY!!