oil pressure need help plz

Hello my car is 1995 v6 3.4l it the oil pressure starts at about 40psi then driving drops to 20 to 25 psi but then gauge just keeps bouncing i have a z28 gauge cluster cause the stock one went out im wonderin if i should just put mechnical gauge in with a t bar so i can u stock on and mechanical well let me kno thanx guys

just remove the factory sensor and get an after market oil pressure gauge, it wont hurt a thing. I've been running my 95 that way for quite a while now. You'll be happy with the more accurate reading.