I finished the oil pressure gauge. For anyone interested in doing it be warned that the tape used in the dash wiring harness sticks to everything but itself. I almost glued my fingers together working with that stuff.
For the sensor I ended up using a wobble 2" extension off the socket and then came off that with a 5" extension, then a u-joint, then a 10" extension which put the ratchet right out in the open with plenty of room to turn. It looked odd but worked perfectly.