Well I forgot to update what happened. I ended up installing the Delco Oil Pres. Sender
It was leaking from in there, o-ring was bad.
With new sender it now reads about 63 psi at 1800 rpm + and at at warm idle 33-40psi.
So that solves that leak and corrects the real high readings from old sensor.
Ok now onto finding the drips coming from other lines somewhere...fun.

Oh & according to the 97 FSM that I now own...
Rad has two plastic tanks attached to the rad right & left of coolant rad.
Oil cooler is on left tank & trans cooler on right tank...

I wonder if that'* an upgraded option??

Only way to find out, count how many rigid steel lines are coming off the radiator.

1997 Buick Park Avenue - GM0104201 Radiator ASM L36
This is the gm parts catalog for the radiator. It only shows one cooler in the radiator.

Next oil change I will have the PA on lift & definitely see how many hard lines going to Rad.
Based on the link Richard posted, I also bet there is no oil cooler.
Will post back findings when I get a better look up in there.