old-tank Did you remove the old cooler completely? Did you have to modify the existing outlet and intake lines off of the trans to attach the new cooler lines? The reason I ask is because if you look at the picture I posted of the 53 Buick trans cooler, the line connection points on the stubs look very odd to me. I am trying to picture what the conection lines at the trans might look like. I have not yet removed mine and don't want to until I find a viable replacement. You mentioned that you turn the fan on when necessary. Does that mean like in slow moving city traffic, when the cooler is not getting the necessary air flow? Sorry for all the long drawn out questions but, I am trying to get as much info as I can. The reason I want to relace my cooler is because it is starting to deteriorate and I don't want to risk burning up my trans. Some one has patched it on the outside so I am sure the inside is some what deteriorated as well. The OEM coolers are not easy to find. So far the sole NOS unit that I did find was QUITE esspensive. I am not bothered buy deviating from the original set up as long as it funtions as well or better than the original. Thanks for your time Rick