Ive spec'ed the engine (bore, stroke, VVL, and so on but slightly bigger turbos since they were less efficient than the real IHI units), chassis, drivetrain (incl. wheelbase) to Nissan GTR specs but the looks are Nota GTR Ive locked front and rear diffs, left centre diff open, was far better handling this way, odd enough. Theres still stuff that can be improved suspension- and drivetrain wise but quite happy atm.