Review on G·PEH Pressure Sensor Adapter Stainless by Evan Zurlo

Looks very high quality, the thread is fine. But in my case the oil pressure port is in front of the intake manifold on my 403 Olds. I bought it to add an Autometer oil pressure sensor in addition to the factory sensor and it was too small for the sender to clean the intake manifold. I ended up buying a McMaster Carr 3-1/2" Schedule 80 stainless steel nipple and made a clamp to keep it from breaking from vibration. Again, as long as you have a gap to do what you want , you can get started.