I believe it's a 10 pass cooler but I don't really remember and it's hard to see the passes through the fins. It is about 9"x6" and it's bigger than the turbo oil cooler. I got it from BAT enterprises along with the sandwich plate and stainless steel hoses. The hose ends leaked so were replaced with better quality ones from Earls. I just moved it from in front of the radiator to the right side well behind the bumper. My neighbor fabbed up a slick bracket and I ducted it from the turn signal hole in the bumper with two 3" hoses and one 3" hose from the fog light bucket. So far so good. I would highly recommend an oil cooler of some sort before you start racing.
I believe Steve runs Redline as well. It's a little thick and may rob a small bit of power but a spun rod bearing robs a considerable more amount .
By the way if you move your oil filter and beat me, I will have to protest of course, no hard feelings
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Ron