[island911]

While I have a lot of respect for those who bring product to market, this respect wanes when those push mediocre (at best) products.
While I believe the intent of this tech-board is to "bring to light" many solid solutions (and the parts needed to support); we also need to be critical of mediocre solutions. . . .even at the risk of offending those with the thermal conviction, et al.

In the case of coolcollars and peak-a-boo nozzles, I believe there are better solutions to be had; yet many people don't want to step up and share, as it might offend those who are profiting from a "solution". (So always consider lack of enthusiasm.)

k9handler -- the fin cooler, w/ the shield/shroud sound like a solid solution. Also, perhaps, doing like Porsche on the Carreras, make an opening on the underside of the bumper . .. this is a high pressure zone (read: lots-o-air)

Well that's my 2¢ worth . . .though you may feel better with someone else's "$200 worth."