I decided to make my own fuel pressure sensor kit as opposed to purchasing one. Have too many things I need to spend my money on now so might as well save $200 and do it myself. I run the Cobb so I had to route to the pre throttle body pressure sensor (left or right), but as I understand you can also use this plug for EcuTek.
Pre-Throttle body MAP sensor male connector ($8.49 + shipping)
Fuel Rail sandwich plate with 1/8" NPT port. Same as 350Z/370Z. ($45.00 + shipping)
I already had two 0-100psi Honeywell pressure sensors with pigtails from my EVO project ($100.00 + shipping)
I have confirmed with PTCS this sensor is Honeywell Part # MLH100PGB06A. The owner actually took a picture of the box to show me the part number. PTCS is updating the spec sheet online as the current one is not correct.
"G" - vented gauge (relative)
"S" - sealed gauge
The MLH series is the one you want as it has the metal diaphragm and highest use temperature. You can actually use these for measuring EGBP and these are the ones I used on my EVO IX for that purpose. You also want to run the vented gauge because it is relative to outside air (baro). Cobb uses the "Relative Manifold Pressure (Sea Level)" so it also is referencing outside air prior to startup to understand baro. Therefore, the pressure differential (rail vs intake manifold) will be accurate regardless of your altitude.
I received the sandwich plate today, which is essentially a 350Z/370Z adapter that also fits the GTR. This unit is very well made and came with the necessary bolts and a spare o-ring.
Next step was to mount the Honeywell MLS sensor I got from PTCS.
I then mounted it to the supply side of the rail although you can also do on the return side. I recommend that you remove the damper and disconnect the line via the EFI connector so you can completely remove from the car and then lube the o-ring and slide the damper onto the sandwich adapter prior to mounting it to the rail. Also, make sure you lube the o-ring on the sandwich adapter prior to putting onto the rail.
Finally, I pinned the connector for the MAP harness as shown below. My harness was about 2ft long so more than long enough to reach the plug on either side of the engine.
I fired the car up for a few minutes and verified it was reading pressure so now I just need to find some time to log so I can see if I am dropping fuel pressure under boost.