I chose the DERALE 13960 stacked plate design with a 500 cfm fan that draws 4.8 amps. I havent started the install yet but will be using the area behind the front facia under the bumper. the lower "fake" air inlet will be modified to allow air to enter. Big plans but havent acted upon them, plenty of room with the only challenge being the plumbing and my "perfectionist" attitude. We took the TT on a camping trip last week and on a 11 mile 6 degree grade the trans hit 238f. Way to hot! The outside temp was 103, welcome to my desert world. I did notice that it attempted to hold at 204f for allmost 5 miles but as the coolant temp rose to the middle between normal to hot the trans temp ran away. Had the hill been longer i would have had to pull over. I have commented before in regard to trans temp affecting coolant temp and vice versa. Ill try to get on this trans cooler install as im sure that removing the cooler from in front of the ac condenser/radiator and going from the factory 10 plate to the DERALE 25 plate will have me where i want to be. $236 shipped was the cost. I will do pic's on install with my daughters tutorial on how simple it is to take the pic, import the pic, attach the pic, yikes!