NACA duct in the roof of the cockpit draws air into the engine's
fan duct (black). The huge turbo sits atop the bellhousing
waste gates branching off either side. The massive
intercooler, which is fed by the large intake in the engine cover,
to be poorly positioned from a CG standpoint though this was status quo
with the aircooled IMSA 962 runners.
intercooler ducting arragement changed little '88 (below) to '89 (right) with
exception of addition of the periscope intake for the turbo.
intakes have also replaced the surface mounted NACA brake ducts
difference is the height of the rear wing with the leading edge of the
endplates being at a steeper angle (and therefore the wing is
higher) on the '88 car.