I posted this over in Cobra Talk but decided it probably should have been posted here.
I've mocked up a couple of different locations for the remote oil filter. I've included a link to the picture of the location that appears to work the best.
When I had my car I had mine mounted on the cross brace that went between the frame rails and in front of the engine. It hung down to about 2" above the bottom of the oil pan and worked great, was very easy to change with no spilled oil, and was well protected from anything flying up and hitting it. Also the feed out to the oil cooler was very easy from that position.