dunnitagain

Looks like a Weldon Pump , some pushlock fittings and a merc oil cooler. Could probably build it yourself for 3-500 depending on the price of the pump and cooler. We used to
run the electric Weldon pumps on superspeedway ( Daytona -Talladege ) cars for qualifying , so we could cut down on the driveshaft power loss from the belt drive pump on the rear gear . And we ran 16 volt batteries with the alternator shut off , so there was no drag from the electrical system either.
I would think an Air Separator that would remove entrained air from the oil as it was circulated would also help immensely. The drive oil gets whipped into a foam after a few seconds of just idling . Just think what that does at your gear tooth interface , for lubrication and cooling!