transmission cooler and rear transmission seal
If you ever find a Aspen/Volare or Dippy cop cars at a junk yard, they usually have an excellent tranny cooler on them. If you get really lucky, they will also have an oil cooler too. Snatch them all up. The oil cooler gets oil from where the sender usually mounts. The line runs along the firewall to fender strut and into a 3 hole block. One hole for a sender for the oil pressure gauge, one hole for the sender for the oil pressure warning light and one for the line running to the cooler. The oil returns out of the cooler thru a line that ends at a rear bolt for the fuel pump. The bolt is hollow (like a brake hose at the caliper) and the oil dumps right into the pan.