ACCUSUMP comes with 1/2" NPT fittings. Since the room was there I put the ACCUSUMP widthwise across the car just in front of the engine and put the solenoid valve and the pressure switch right into the end of the accumulator which faced toward the left side of the engine where the port is located. I used the low pressure switch - I think it is 20-25 psi.
From the pressure switch I used a -10 AN adapter and line between there and the block port. Hated to reduce down to 3/8" NPT at that point but since engine is already in the car it was not practical to enlarge it. So I rationalized that 3/8" is plenty big enough at that point, and track tests seem to support that conclusion just fine!
Here are some up-to-date photos of the installation.
First, the overall shot from above facing forward:
Next, the outlet end of the ACCUSUMP showing the valve and pressure switch:
Finally, the entry into the block:
Enjoy!
Tom