does anyone have any idea what kind of exhaust system and/or piping diameter that spoon uses on their endurance N1 DC2 R? i have the bestmotoringvideo with spoon's R in it, but it doesn't say it's specs. i know it has spoon 4-2-1 header, but i don't know the exhaust.

if anyone knows the exhaust and piping dia. for it or can help me find out that would be great.

thanks for all the positive feedback on my questions. it's helping me a lot.