External oil cooler??

the 87 gran fury cop car i pulled my drivetrain from for my 66 had external trans, oil, and power steering coolers. I janked em all. currently in running an external trans cooler (B&M) as a standalone unit, eventually ill piggyback it with the cooler in my american-eagle radiator, as for the oil cooler, i need to retrofit the mounting bracket to make it work, but in that factory application it fed out of the 1/8 pipe thread port in the back of the block, through a 3/8 steel line along the fenderwell, Teed off to the oil pressure sensor and a light switch, fed into the cooler, and returned through the inner fuel pump mounting bolt, obviously hollowed out, and had a rubber flex line that was crimped to the special bolt. I will run this when this snow melts off and i can work with it.