The build of the auto has nothing to do with needing a trans cooler. There's 2 major reasons why people put trans coolers on. The first and most important is to BYPASS the cooler in the radiator.. If you saw what it looked like, especially after a tranny failure. You'd want to change it also. They clog up and cause earily tranny failure. And of course the second, being a better cooler than the radiator cooler. a Stall convertor Produces more heat, PERIOD. Heat is bad as it thins the oil, and essentially causes slip. Your convertor problems were nothing to do with TCE / Dominator. Turns out there was a problem with the Dominator once they split it. Depending on the turn around time for the auto, they will either use TCE or Dominator. TCE is prefrence based on experiance anyways. If you were to get a convertor, You wouldnt get a factory modified one. You can only go so far without loosing too much positive drive. Ideally you wanna go a smaller diameter convertor. But in going smaller diameter convertor, You also loose Oil capacity = need better cooling capacity. Stall speed isnt based on "wanting" 2800rpm. Its based on the torque your engine produces. More torque. The tighter the convertor will be.. Ie, 2 identical convertors in 2 seperate cars. one will do 3000rpm, and the other will do 2600rpm. Clearly the one that does 2600rpm produces more torque. There was a hell of a lot more information I posted here, but I lost it pressing undo too many times. and I cbf re-typing it all.