You can do a search in the tranny forums using the word "cooler" and you should get several pages of posts on this subject. Be sure to search "all posts" and not just the last week.
Also, check out my
CD4E Mod page for some info on this topic as well.
As for an engine oil cooler, well I don't guess anyone has really needed to install one of these themselves. I guess only the guys running forced induction system.
