Looks like the same thing but with a nicer finish.
10 years ago I built my own water-air intercooler system. It worked reasonably well, but the pump wore out and I stopped using it. Bought a subaru electric water pump later on and made a new cooler with more internal surface area. But it didn't work as well (data logs showed 15% effectiveness) and the niggling doubt about internal water leaks led me to unhook it.
So no, a little more than just sitting in the shed.;)

