hks high power exhaust question noob

[Yakawaka]

OK so sorry about the noob question but i have seached for this answer for a few few hours and cannot find it so i have to ask. I am attempting to install my HKS hight power cat back to the ka stock piping on my s14 however i cannot find where the hks flange bolts to the stock pipe. i was just wondering of i am just blind or i need to buy more piping cause i know this exhaust is supposed to be universal with the sr n ka. thank you for your time. its the 85mm btw

[Fenris]

I have one of these on my S13 with a KA24E.. but.. Its Header-> Cat -> Exhaust.... Did you perhaps forget to keep the catalytic converter? and or do you not have one? Mine has a magnaflow hi-flow deal on there.