After seeing the pictures and reading the posts on PMD cooling decided this would be the route I would take.

Notched out the front license plate bracket and fitted a utility nozzle for a RIGID vaccum from Home Depot. Attached with stainless steel hardware. Cut a half circle in the air dam for 7' wet/dry hose for same vaccum and routed behind the air dam to the left front wheel well, behind the flexible cover on the wheel well into the engine compartment. It ends with another utility nozzle that directs the air over PMD. Hose held in place with bracket and tie wrapped strategically to keep in place. Plenty of hose and did a loop between the air dam and the bumper. No effect to air coming thru and will definitely not allow any water. Checked air flow with a leaf blower on idle to make sure that it worked. Also wrapped the hose with foil tape as it did get quite warm after an initial test run. Drove in 90 degree's for about 20 minutes to get everything up to temp and after stopping could actually lay my hand on the heat sink. Before it was too hot to touch. The PMD is only slightly warm. Wrapping the hose reduced the temp of the hose significantly.

May be a bit involved but was fun and I wanted to keep the PMD out of the weather.

Hey look! There goes Kirby.... :lol:

Seriously though, looks like it will stay cool while driving.

Different twist from other ideas thus far; better than stock, but worst time for heat to develop is slow crawling in traffic which would not allow for air flow, maybe augment this plan with a fan to pull air thru the suction tube and dump it onto the driver, also needs a timer for post shutdown heat soak, hot summer day underhood temps easily 250F especially after a hard run.

Not a good place, hotter than on top of engine, tried it, PMD lasted less than a month.
of coarse that is only a sample of 1 unit, and they always ship the defect to me...
I think you need outside air for coolong.

Considered the slow traffic and under hood temps scenario and so far the heat sink is doing what it was designed for. I plan to try and get some temperature readings to see just what is going on during those times.

q - as far as not a good place.......been there for over a year and no issues so far. Actually outside cooling is what it will get except when stopped. Surprisingly enough it doesn't take much to get air flowing thru.