Ok guys I just got em, They did a GREAT job on these headers. I have had the Stock, CEN, NJBT, and now the Duratrax headers. so heres a little of my own feelings if this helps anyone.
Stock: well stock is stock, I can't really say much more than that.
CEN : I HATED this header, wrong angles, port is tiny and required alot of dremel work before I would even put it on, this header has since found its way to the circular file.
NJBT : This header is great for low end but has a few design flaws, first of all it will touch the a-arm under full compression, second you really can't go to any smaller than a 18 tooth clutch bell, and even at that it is VERY close to rubbing the shock. If you want to use this header with a 19 or 20 tooth bell you will be fine other then the header touching the a-arm. I am very impressed though with the performance from this header! It is also already ported. I am going to get the gen 2 NJBT once they have it finished, they are currently working on these issues and a new design will be out soon.
Duratrax : These are very well made headers, I was expecting when I ordered them to have to port the opening like I did with the CEN, but I was pleasently surprised when I got them and they are already match ported to the gasket! The diameter is big enough to slide the stock header inside the duratrax header. They fit very well, however to use it you with an AE pipe you will either have to move the reciever box forward a little or cut the nipple off the new style AE pipe and mount it like the old style AE pipe. It comes with the screws, a nice heavy gasket, and coupler with zip ties, all for $11! I really like this header so far and after I run it some more I will let you guys know a little more about the performance, I am also going to put one of these on my RS4 3, and get rid of that nightmare that comes on it.
Well I hope all this helps someone.
Stock: well stock is stock, I can't really say much more than that.
CEN : I HATED this header, wrong angles, port is tiny and required alot of dremel work before I would even put it on, this header has since found its way to the circular file.
NJBT : This header is great for low end but has a few design flaws, first of all it will touch the a-arm under full compression, second you really can't go to any smaller than a 18 tooth clutch bell, and even at that it is VERY close to rubbing the shock. If you want to use this header with a 19 or 20 tooth bell you will be fine other then the header touching the a-arm. I am very impressed though with the performance from this header! It is also already ported. I am going to get the gen 2 NJBT once they have it finished, they are currently working on these issues and a new design will be out soon.
Duratrax : These are very well made headers, I was expecting when I ordered them to have to port the opening like I did with the CEN, but I was pleasently surprised when I got them and they are already match ported to the gasket! The diameter is big enough to slide the stock header inside the duratrax header. They fit very well, however to use it you with an AE pipe you will either have to move the reciever box forward a little or cut the nipple off the new style AE pipe and mount it like the old style AE pipe. It comes with the screws, a nice heavy gasket, and coupler with zip ties, all for $11! I really like this header so far and after I run it some more I will let you guys know a little more about the performance, I am also going to put one of these on my RS4 3, and get rid of that nightmare that comes on it.
Well I hope all this helps someone.
