We are getting ready to release an "ultra-slim" oil cooler adapter. This adapter was designed with header clearance in mind.
Features 13mm passages, same size as the ports on the pan, for maximum flow. It has two 1/8" NPT ports for sensors or a turbo oil feed line. It comes in an anodized finish and includes fittings for either -8AN or -10AN lines.
Price hasn't been finalized but will be around $129-$139.
Here are some screen shots of the CAD model:
Here's a photo of the prototype, which looks a little different than the production version above.
Here it is next to a Mocal thermostatic oil cooler adapter for size comparison:
We are also getting ready to release our oil cooler adapter for the GTO and other front-sump pans. It will be the only one on the market!