Ya I would like to get some 2.5" pipe, carbon or mild steel. Which ever is best for a downipe and not rediculously exspensive. I would assume carbon steel is best though.

I also need to make intercooler piping and fab up some coolant and oil lines for my turbo. 1x Standard 2.5" two bolt flange & DSM T25 to O2 4 bolt flange..

Other than that thats it.