Not a massive amount has been happening lately, have just been to busy with work/family/life. Recently though I have grabbed the sidepipe job by the horns and been getting stuck into the cutting, grinding and welding. We ARE making progress.
These pipes will be functional. 4" tube. inner 2.5" perforated and it will be stuffed with steel wool muffler packing stuff.
The inner tube and mounting rings/hardware are stainless, the rest is mild steel. The 4-into-1 are 2".
The tailpipe piece is flanged and will get mounted with a through-bolt so the internal baffle and stuffing can be removed and rebuilt.
Still have to clean up some more welds and will finalise the 90-degree tail pipe once it is mounted on the car.