[Richard]

I modified the mounting plate that goes in-between shroud and radiator for a cleaner air path and to make a complete seal to radiator. Moved the upper bar up about 1/2" and also opened up the top/bottom bulges as they did not need to be closed up as much as they were. About 1/2" was removed from the side vertical pieces. More free area will allow more airflow.

Original plan was to move both top and bottom bars and cut shroud. Decided the amount of work vs gain would not be worth it. Plus, getting the patched shroud to look as nice as it is now would be pretty difficult.

An interesting thing I noticed today when reassembling the fan. The fan blades have a reverse sweep. Meaning the outer forward swept edge of fan points into the direction of rotation not away like a traditional blade. Have seen this used on high end A/C units installed in the past. The design is supposed to reduce air noise generated by the fan.