Yes, I was thinking about that since I started building it. Here are the parts.

The pump you can see in the video was my first guess.
http://www.amazon.com/gp/product/B002PDBRXE/ref=oh_details_o07_s00_i00?ie=UTF8&psc=1

The second pump was almost enough. I combined the two and flow looked good.
http://www.amazon.com/gp/product/B0049XKMGQ/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

I also bought a cheap bilge pump from china for testing.
http://www.amazon.com/gp/product/B00INSTAXO/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1

I bought the tubing to fit the second pump.
http://www.amazon.com/gp/product/B002GUFW3W/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1

I never knew you could find radiators for this cheap. until now.
http://www.amazon.com/gp/product/B001DH81SW/ref=oh_details_o06_s00_i00?ie=UTF8&psc=1

Bought two fans that should have fit on the same side. They didn't fit well enough. I switched the polarity on one of the motores to run in reverse. I'm sure it's not very efficient. The solution works for now though. http://www.amazon.com/gp/product/B003U7UR3A/ref=oh_details_o05_s00_i00?ie=UTF8&psc=1

Ordered 5 gal of mineral oil. I would love to use the 3m fluid, but it's out of the budget. This cheap stuff has worked fine so far. Makes a good laxative too. http://www.amazon.com/gp/product/B000HHLUE6/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1

This oil is a better solution.
http://store.steoil.com/mineral-oil-pc-kit/?sort=featured

Amazon Prime did this to me.

I already had a few parts lying around. I'm not sure the cost of theses parts or the availability.

I used shark bite tubing and fittings to plum the radiator. They fit snug in the main radiator inlet and outlet.

I used some 2 part marine epoxy to hold them in.
1/4" (3/8" OD) X 1/4" (3/8" OD) http://www.sharkbite.com/product/elbows/

The tubing

The adapter to the tubing. http://www.sharkbite.com/product/polybutelene-adapters/