Here is the DIY oil cooler result:
And I decided to take on M.Bonanni's ducting idea, found
here. I'm not real happy with the way the box looks, but you can hardly see it with the bumper on. Function>form on this one
This should force all the air through the oil cooler on that half of the front bumper opening. I don't have any real concrete evidence that it works, but some quick experimentation with a fan and a sheet of paper convinced me that it was well worth the <$10 I spent to make it. I'd like to get the most out of my small 24-row cooler. Maybe the ducting will put it on par with a 25 row Setrab/Mocal higher end unit.
I won't be able to drive the car yet, as I am still looking for an oil filter. That is one thing I don't like about the Permacool oil plate. It's big and bulky, and looks like it requires a larger O-ring on the filter. I'm going to look into the following filters:
Mobil1 - M1-105 / M1-207
K&N - HP1005 / HP2007
WIX - 57046 / 51381 / 51626
Purolator - L14619 / L17817
If anyone has experience with the permacool plate and a 20mm oil filter that works, let me know.