Looks like there are a few different OEM units. Thanks for the info guys...
PS - reason I asked: The A1 NA Diesel intake manifold has a big rectangular opening that for a turbo-diesel application might be "cool" (literally
) to weld an air-water core directly to:
It would make for a pretty tidy intercooler install, with the boost tubes not being much longer than they would be unintercooled.