I was considering something similar, but not having a cooling system yet held me back. I am also considering mounting it where the alternator used to be(had to drop the alternator because of the shock tower) but I am unsure if I have enough room there because of the nightmare mess of adapters and NPT fittings coming off the oil filter adapter at the block(unlike the Cobra engine, no one makes a plate that bolts to the block for the 3.7L, had to adapt the stock one and tap it)Impressive Build! I'm nearly "done" with a 1998 Cobra conversion. I should post my build, it's a fun read.
I don't have to many pics of the bracket, but I cocked my oil filter at an angle and made a bracket to locate it under the radiator. The cooler lines go around to the factory Cobra oil cooler. I have put about 1,840 feet on the build so far and it seems to be holding up