To build what I have so far, I purchased two 2 1/2" mandrel 180 degree J-bends and a stick of 3" tubing from Summit Racing. Tubing cuts have been made with a miter saw with cutoff wheel, sawzall, and hole saw.
I will add a 3" dump where you see the hole in the H pipe.
Prior to the Magnaflow mufflers, including the H pipe will all be 3" pipe.
Time consuming but fairly simple to this point. I recommend anyone giving it a shot. Satisfaction of building your own exhaust will be worth it.
I am running the 3" dump to the rear. I added to pictures to show the custom oval tip as I align it for welding.
Picture after final welds is attached. System is ready for install. Once I get the headers installed, I can fabricate the header collector to H-pipe tubes.
Edited by Smyrna388Z, 23 January 2016 - 08:58 AM.