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If im correct they don't need the adaptor coulpings, the transsion is designed into the pipe(like stock hoses). I thought that was very nifty of them. I could understand this causing less turbulance, maybe you could consider that idea. Selling pipes with BOV flanges though is cool. 
TT dynoed 340 rwhp  361rwtq before rebuild w/ SGP block/ GMS550BBs La-Z-Link.
  
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