Found it! I read a lot of descriptions elsewhere, but I'll add mine. If you follow the oil dip tube down the back of the engine, the tube is attached to the engine block in two places (one flange on the tube, one strut towards the driver side) making a Y. The sensor is between this junction and the engine block. If it helps, look for the worst, most unreachable spot and you'll find it. Then again, you can't see it from above and you can't reach it from below....
I removed the air box so I can reach one arm over the throttle body and distributor and the other fits in the very small gap between the passenger side of the block, header, and wheel well. First bolt came out relatively easy, can't get an angle on the 2nd. Taking a break to regroup. I can reach the bolt, but I can't seem to get my hex tool aligned. I can't wait 'till I have to find the bolt hole blind and reinstall!
BTW, I love that the repair manual specs a torque. The only way I'd be able to get a torque wrench in there would be to remove the passenger side header. Sheesh. Joys of the 5.9.