Oh, I'm sure the DM crew could put together something worthwhile, but yeah, it's not the most complex of things and can be done without a premium.
http://www.toyota-supra.info/forums/...il-cooler.html
I know I've posted in more detail about this in the past but I don't have the time to dig for it right now.
Basic shopping list:
Around 18' steel braided oil hose
block adapter (mounts where the filter is)
remote oil filter head
thermostatic valve
oil cooler (I suggest around 8" x 12" or larger)
Some 1" x 1/8" aluminum stock from home depot to make mounting brackets.
Everything should be 1/2" or -10AN.