I used a B&M supercooler for my auto trans when I had the 3.4L. I bought it from Jegs: http://www.jegs.com/webapp/...10001_10002_31950_-1
I mounted it behind the side scoop on the driver side. I now use it as an engine oil cooler with the V-8.
As a trans cooler it kept the trans temps down and very well regulated (minimal temp swings even during "spirited" driving on a road course)
I have not checked the actual temp now that it is being used as an oil cooler, But I have never had any heating issues with the V-8 for the past 2 years.
This thread has the drawings of the bracket I had made to mount it:http://www.fiero.nl/forum/A...030819-2-033776.html
The bracket is universal so if you wanted to use the passenger side scoop area it would also fit there Or if you wanted to put a trans cooler on one side and an oil cooler on the other.
Here is what it looks like mounted in the car: (wheel well cover removed to show detail)
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