In another thread I've sought advice about using my wagon (NA B21 M46) to haul around a big box trailer. Some of your helpful responses have led me to believe I should prepare to dump more heat from my engine and transmission. I'm thinking that it might be a good idea to transplant a turbo oil cooler into my car. Any suggestions?

Here's some of the earlier post for background: I do have the M46 manual transmission, and I guess a transmission cooler is more of an option for an automatic. I already have a three-row radiator and an auxiliary fan that I added for my AC revival. But what about an oil cooler for the engine? I have seen oil coolers on turbos retired to the boneyard. The heat exchanger itself would have to go to a different location than on the turbo, but I could probably manage that. The connection at the oil filter seems pretty straightforward. What do you think?

Thanks in advance!