Then welded up the headers to the 4-into-1, 2.5" outlet collectors. They will then get a 2.5" 90 degree turn towards the sides of the car, then the cats, then out into sidepipes.
Yes, my welds need some clean-up, but hey, I work at a keyboard all day!
Once all complete the headers and all the exhaust will get HPC coated in black.
The 4-into-1 collector goes into a 2.5" downpipe with O2 sensor bung and then a flange that points sideways. To this will go a 2.5" cat, and then out into the sidepipes.
Next up will be beginning to make the sidepipes......