might be the HVE 4-1 they have long runners.. just a thought..

 

it could very well be the HVE, i took a look at a few of the SR and Kspec headers and i dont think its the ones from SR but i didnt see any marking on the headers, all i know is i wish i saw them a day earlier so they can be on my car-- i think the 4-1 SS ones are gone and the cat=-=- but i still have audio for sale and the 4-1 better headers...