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I bought a cheapo stacked plate cooler 24,000gvwr from the auto parts store, and it has worked perfectly for the last several years. I had to get something, because I would see overtemp warnings when running twisties myself. I don't think I paid more than $50.
Here's the one from Jegs. I polled many folks on this as I have a blower and do some drag racing and twisties here in the mountains!
This one works fine for me and many others too.
That said, I have had others really mention they found the one w/ the fan attached to be even better for hard core mods/racing which you'll see on the Jegs web site too. I didn't need it though. My temps are about 160 degrees now and much slower to rise after 1/4 mile runs.
This is the link for the pic and model # for the B&M tranny cooler: