Im looking at buying one of these 2 headers off jdmshit.com

JSR (JDMsh!t Racing) B-series 4-1 SS Header * NEW *
* Exact Replica to Mugen 4-1 Header
* 2.5" Collector Size (Need 2.5" Cat Converter)
* Polished Stainless Steel

OR

JSR (JDMsh!t Racing) B-series 4-1 CC Header
* Exact Replica to OEM Integra Type R 4-1 Header
* 2.5" Collector Size (Need 2.5" Cat Converter)
* Ceramic Coated|

which header do you guys think would give me the most horsepower?? The ITR header looks to me like it flows better..also i have a dc sports 4-1..should i just keep it or go for the other one.