? on JR race only header.

Has anyone installed this on there car? just wondering if this is a better set up than the dc headers and a high flow cat. so if anyone has any information or personal exxperience i would appreciate it.

There's a few threads around here about the JR.
Here's a link....

http://www.ephatch.com/forum/showthr...ight=dynaspeed

Thanks man that really helped