I know its not super cool but going to share it anyway.. After not liking the available options for the downpipes (All copies of the BSR) including the funny double ring sealing it was time to make a custom one the right way.
Backside has a nice taper to match up to the inside of 3in tube. Reducing turbulence and helping make a bit more power. Even if it is negligible at least I know it is done right.
Front is cleaned up to match the turbine shape and seal without the silly double spacer ring.
As you guessed the rest is coming..
Next up for machine shop is a V6 version