I assume that you are talking about replacing the ATF to coolant heat
exchanger on the front end of an AT.  This is commonly done when
putting in a Subaru engine.  When I did my conversion, I got the
heater core like device from my brother who uses them on demolition
derby cars, bought some hose rated for oil under pressure , and (the
hardest part) got the banjo fittings by scouring pick-and-pull junk
yards.  It's been a few years, but I believe the fittings came from PS
pumps on Mercedes or BMWs.

good luck,
Larry A.

On Mon, Feb 20, 2012 at 6:59 PM, marc rose <mrose1028@gmail.com> wrote:
> Anyone ever make there own "kit" for a tranny cooler? �I have a 90 Carat
> and want to get the factory tranny cooler before it gets me. �Don't really
> want to spend the money on the GW kit and was wondering if anyone has
> dupplicated the smallcar kit. �I would imagine you could put your own kit
> together cheaper by doing the leg work yourself. �I am a little bit of a
> tight wad and don't mine the extra leg work.