If you only have a limited space to put it, The Mitsubishi engines have a tiny pump that is smaller than ones fist.
I'm not sure of the psi rating but shouldn't have a problem to run thru or recieve from a cooler/res.
It has two pivoting bolts at the bottom and a front tightening bolt @12.
Found on the 83+ pickups/eclipse/talon and probably more.
In otherwords, EVERY yard should have some.
Just a thought..
E