It cost about $40, and i just installed it in the driverside hole in the bumper. Just pull the headlight and mount two "L" brackets in there to hold it and run the hoses to it and your set. Make sure you buy some extra hose, I think the part number is 105 on the extra hose.
You're going to need a lot bigger and better cooler than a Hayden. I would go with the largest cooler you can find like the B&M Racing Super Cooler and then get a nice fan to pull air through it from SPAL. Then make sure and change your tranny fluid every 2-3 oil changes. I've been told that no matter how large a cooler you put on our cars, the tranny will still get very hot because the pan is so small.
I've got the Fluidyne with the PHR fans- boy they should have sold you a bigger alternator as well. Do yourself a favor and put a switch to turn those off in the cockpit area! The switch is helpful when you need to start on a cool day- turn them off and save the battery- then switch it back on when the engine comes up to temp.
I've roasted a battery already because those fans pull so much!