New bell mouth or whatever you want to call it. No its not optimized, and im no expert but it has to he better than what is on the car atm. I feel the need to say that it still requires a good clean up before i weld it all together before the experts chime in. Also i realised id fucked up and the flange i have pictured is only 9mm, i have ordered a 12mm flange as it will be less likely to warp while welding up. Ill be using the existing 3" dump by cutting the exisiting bell mouth off and butt welding or possibly v banding the new bell mouth onto it.
Also picked up a 2015 sti tmic. Wish me luck, dont really think anything else needs to be said.
And here is current pics of car with the wider GD track. I can tell its wider because it looks wider....
