I've long wondered what real difference those "coolers" actually make. Like pontiacgp, I use a trans cooler for my power steering on my race car and would do the same on a street car. Have you looked at better stock coolers? A lot of trucks had them, both of mine do. I know in the dead of summer the PS on my 1500 sucked at an idle, but that was from a POS reman pump. I later swapped in a clean original pump, box, and cooler from a 3500 and it works great now. My Corvette has its PS cooler behind the radiator if packaging is a concern. That's where I intend to move the Camaro's cooler eventually. For now, it's just fed by a 3" brake duct hose.