I am the proud owner of a 2003 HD with the worlds smallest Trans cooler and shudder in the Trans. WIWI Trans in Miami says Trans oil is 212* and a cooler would bring it down to 160*. so I bought the kit from Makco for $169 and had it installalled for $250. .The VW cooler was six " by 3" buried under the eng. I am hoping that, with another Trans oil change and some"Shutter Stopper" I will have saved the Trans.