for an alternate pressure tap you can buy a oil cooler thermostat housing that has a pressure port in the top of it. I believe Summit or Jegs can sell you one. The only risk with that is like Aaron said, anything down stream of that but before the block that is blocked will give you a false reading. However if the only thing downstream is the oil cooler then your chances are pretty slim it will ever be an issue.
Edit: I said the wrong thing here, though I believe you can get T-stat fittings, what I meant was a double in double out remote fitting. (My oil cooler kit came with one for the filter housing.) You just plug one of the "ins" and put a npt adapter fitting on the other out. Without looking Im sure there are other possibilities along those lines.