Any particular reason you bagged the Derale unit for the B&M one? Actually, if there was a reason, was it for better cooling or just weight, size, etc. Did the Derale unit have a stat? Any other things pro/con on the Derale vs. the B&M? How thick are the two different adapters?
As you can see, I'm seriously considering an oil cooler but $$$ is a major concern. I *might* go with the Derale setup and then upgrade the rad later on (when I have a job), unless it is junk.