modular radiator for engine test stand

[Lynn]

Putting together an engine test run stand.

Would like a modular type radiator that I could use with virtually any engine. Something like this:

https://www.ebay.com/itm/ALUMINUM-EM....c100167.m2940

Price isn't bad, but it DOES NOT include any of the fittings.

Fittings available are:

*Note that each EMC Evolution radiator modular system unit has 7 separate -20AN connection Locations for individual needs
*All fittings and adapters have one O-Ring included.
HZ-40030 -20AN male to 1.25" Radiator Hose Fitting.
HZ-40031 -20AN male to 1.75" Radiator Hose Fitting.
HZ-40032 -20AN male to 1.50" Radiator Hose Fitting.
HZ-40033 -20AN male to -16AN" male coupling.
HZ-40034 -20AN male to -20AN" male coupling.
HZ-40035 -20AN male to 1/2" NPT Adapter.
HZ-40036 -20AN male to 3/8" NPT Adapter.
HZ-40038 -20AN male to 2 1/8" Filler Neck. *Includes radiator overflow fitting.
HZ-40040 Radiator Overflow Fitting
HZ-40037 -20AN male plug.
HZ-40041 -20AN O-Ring.

Looks like the price of the fittings are going to exceed the cost of the radiator, and I would still need a fan and shroud.

Repurposing some other items, using an old set of gauges (still in the box) and will only spend about $50 on the whole rest of the stand. Would hate to go another 600 just for the cooling.

Guess it would be a lot cheaper to just buy two radiators, each a mirror image of the other.
Any other options?