I haven't really had a chance to really tax them yet, but even after initial use I can tell you the quality less a bargain and more likely par with the price. The individual pipes in the right bank are touching in two places (roughly half way between engine and collector) which is causing friction points that tick while they are cooling down. Left bank is fine and has obvious clearance that avoid this issue. If the problem doesn't get any worse then I'll consider them reasonable value.

Shipping was amazingly fast! Concept Z had it out of they're warehouse in 2 hours and in the mail. I have ordered several things from Concept Z Performance and shipping was super fast. Now on the headers they came with new bolts, stickers and instructions. I only replaced the driver side being my old header broke when I was trying to remove my exhaust to change clutch. The fit was perfect on the driver side. The passenger side looks like it will fit just fine. I will update down the road.

Ordered these last year and had them installed since last summer. Shipped quickly by the Concept Z team and I had them without the usual delays during Covid-19. They look great and finished nice. They are a major job to install so I recommend taking them to a competent shop. I also ordered new gaskets for the block side and did not re-use the old. My Berk hi flow cats were new so they fit no problems. No rubbing anywhere Great sound .You have point out at car shows they are hidden jewels !