Intercooler piping. I used exhaust tubing from o'reilly auto parts.
Painted.
I modified an intake pipe from a Subaru Impreza and used it for the intake pipe for the turbo. I cut a lot of things off of it to fit and used epoxy to fill the holes and seams.
I cut apart my old cone air filter to make a filter element for the MAF sensor. A normal size filter wouldn't fit in the engine bay.
I installed 750cc injectors in the secondary's and rewired the connectors from S5 to S4.
Parts, gaskets, etc.