You need a parallel flow efficient cooler, not a tube and fin style cooler which wont shed the heat as well. Tube and fins are one continuous tube, parallel flows use stacked plates or tubes.
Also these ATX have no decent filtration of particles, they use an internal metal screen filter sort of like window screen. Every small particle of grit that comes off the clutch packs simply circulates around with the oil grinding away like sandpaper and that is why people talk about changing fluid every 10 thousand miles, but really since it is not filtered well, they are just delaying the inevitable result. You put the filter in the line, AAMCO sells inline filters. Ford sells one, and you can get one at CarQuest for $22. The filter and cooler need to go in the return line and this is the line coming off the bottom hookup on the radiator.
I used a ford focus cooler ( 23 inch by 5 by 3/4 )and fit it in front of the stock power steering pump cooler, An easy install, no trying to force it in the spaces where it was not designed to fit. Or you can try and find one long and narrow. I got mine on ebay. Use the space you have, some people try and force coolers between radiator and condenser where there is almost no space.
