This page will detail the various Nissan twin-turbo (VG30DETT) swap-specific items. The main thing of note here is the downpipes. While we were able to retain the stock VG30DETT exhaust manifolds, the downpipes has to be custom-built to fit into the smaller 510 chassis These actually went through a couple iterations. This is version 1 of them circa 2004. Note the driver's side has some nasty bends in it. Even with this the car put down over 330hp to the wheels (per Dynojet) with stock everything (turbos, intercoolers, etc. In 2009 I upgraded the turbos to still small Garrett GT2554 units, and with that change came a redesign of the downpipes as well. Another thing done initially was to use the factory Nissan intercoolers