If indeed your Edge already has a transmission cooler, and it is the same one that would have come with the vehicle had it been equipped with the Factory Towing Package, you do not need to add an additional cooler.
I would strongly recommend verifying that the cooler you have is the same as with the tow package. Towing near the upper limit of the vehicle towing capacity is hard on a transmission, having a cooler is essential.
I would also recommend verifying the towing capacity of your... view full answer...
We carry a remote mount transmission filter that may work with your 1959 Cadillac.
You can check out part # D13091. This kit comes with the filter, mount, temp gauge kit, OEM hose and clamps, and brass fittings along with the mounting hardware. The installation instructions are also attached. view full answer...