Anyone else who replaced a Xantrex 548nMSW with SW2012?

I am ready to pull the 458 and install the SW 2012. I have most of the problems resolved in my mind except for cooling. The 458 had an adapter duct which turns the cooling fan output downward to an opening which is turned to add a venturi assist when the coach is moving forward.

Unfortunately, the 2012 has the fan output is positioned so that I can see no way to use this output duct. There is venting in the compartment, but not sure there is enough to provide the cooling it needs.

I am working with a 2006 Phaeton. Has anyone else dealt with this issue?