Brokenhead that's a great idea i do not know why i did not think of that on the oil pressure gauge.

Cletis i did not see an extra 1/2" port on my 235 thermostat housing like whats on the 261 but i have an extra 1/2" port on the water pump. The top 1/2" hole i used for the heater line and intake hot water line. The bottom port is plugged off i can use that for the electric sending unit for the original gauge. I think the water pump has 2 each 1/2" ports. I have to check when i get home. Thanks guys. I need to look outside the box.

"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my sweet ride." -Amen

56 Chevy 3100