A service bulletin on Kavlico fuel and oil pressure sensors was published a couple years back, advising of a potential for them to leak. I decided to replace them both just to be safe. I was able to remove them both while leaving the transducer manifold in place, although it was a tight fit due to how crowded this area is:
I replaced the oil pressure sensor with another Kavlico sensor – the gold thing at the top – this time the supposedly non-leaking kind. I found that the correct Kavlico fuel pressure sensors were difficult to come by, so I was forced to buy one of Garmin's new private-label sensors – it's the silver cylinder at the bottom of the manifold. The manifold pressure sensor I left alone, since it wasn't subject to the same service bulletin.
At least the wiring connections are the same as the old sensors, so not a bad job overall.