x2 on the True-Cool 4739. After I decided there was no knuckle room to get the old cooler out to put this one, the install became VERY easy. I routed the line to have the ATF flow through the new cooler first, then it goes down to the stock cooler. I bolted it on the same way as hayjay, so it's the first thing in the wind.
Non-towing situations only so far, but where I normally run 170-180* temps in the summer, I now run 130-140* temps.
I got mine from Dieselsite too - and my install looks the same pic at the bottom of this page:
http://www.dieselsite.com/index.asp?...ROD&ProdID=205
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www.VibrantLED.com -- '02 7.3L Excursion Limited ~135Kmi total; ~50Kmi on WVO
Vegistroke V3 (installed 4/09); HIH, Aux Pump, FPHE (added 11/10); WVO Designs CF
PHP Gryphon; 6637 intake; 4" exhaust; Terminator HPOP; Tru-Cool; Evans NPG+; other goodies...