Hello! So I had a borla 60607 x pipe on my zl1 and then decided to add the s type axleback. I go to insert the x pipe that connects to the muffler and the size of the x pipe is much smaller than the pipe that connects the muffler? Ill send a pic because that sounds confusing but is the diameter of the x pipe on the 60607 different than the setup for the entire s type catback which is part # 140726. Let me know! Thanks.
Heres the link for the pic.. let me know if it works.
https://imgur.com/a/pmU4kwi