oil pressure switch r&r

[The Loves]

I'm on the home stretch of installing the 3 new gauges in the 4kq.
All installed and wired with only installing the new oil pressure sender for
the gauge left to do.
Looks like there isn't enough work space down there.
I'm guessing that I will need a 24mm universal socket to remove the existing
sender but what about the 17mm needed to install the new sender?
I looks like there is no way to get a wrench on it (between the block and
the sender) and get it snugged down.
Does anyone have any tricks for doing this to share?
TIA