I used an earlier discontinued Ford Motorsport 90 degree relocation adapter on my slant 6. It lays the filter down horizontally and points the "top" of the filter to the rear of the car and slightly down. A drain pan fits right under the filter. This is the discontinued one I used. https://www.speedwaymotors.com/Ford-Performance-M-6880-A50-90-Degree-Oil-Filter-Adapter,27896.html
The newer version Dave posted above will work just as well.