Dual Niagara 20003A coolers are fitted just below the baffle deck. Exit air ducts are required to prevent the lower cowl from being pressurized. Collector ducts are in order. The left side has more space and allows a more squared duct. The right is more complicated in order to fit around an exhaust riser. Ducts will be fitted with scat tube to direct air out the bottom cowl. Coolers will be connected in series. I expect very good cooling from this arrangement. In fact we may add controllable dampers to control airflow and subsequent oil temps. Cooling is difficult to achieve and easy to reduce. I'm confident that this setup will work well.