Exhaust DIY?
I am putting a LS1 engine from a Camaro in my Nissan 240sx.
I have some questions regarding the exhaust system on my LS1 swap.
- What size pipes would you recommend for the headers? I am going to fabricate it myself.
- How far away from exhaust ports would it be a good idea to assemble the 4 pipes to 1?
- Where would it be a good idea to assemble the 2 pipes, coming from both sides if the engine?
- What size of pipe is needed for the assembly of the 2 pipes going backwards?
- I am planning on, in the near future(maybe a year), adding a compressor. Does it make any difference in what size of pipes I should choose?
I hope these questions isn't to big of a mouthful! Any help is much appreciated!

Regards Jack
What about the rest of the exhaust? My plan was only one pipe going backward. 3" or 4" when the headers are collected?
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