J20A Engine - Measure Fuel Pressure?

[fixkick]

is this stock car / what car, what year?
ok on ours the end of the fuel rail has plug we can replace, with 14mm to NPT fitting. pipe threaded
the left side blow, is to tank pump , feed line
the right side many have a plug , just under that NEW FPR there.
also look at the fuel filter fitting there as pressure tap point, 6mm on ours. but no all year have this.
atm2267 fits ours. the plug fits our J20 in the SW420 grand vitara up to 2004, beyond, IDK but
if you mike the plug thread it its 14mm
Fitting, Metric Adapter, Oil Pressure, 1/8 in. NPT Female to 14mm x 1.5 Male, Each 1.5 pitch, $14 each at summit racing.

http://www.fixkick.com/INJECTORS/Schrader-vales.html

I have a J20A Engine (2.0L DOHC 16V). I want to know the fuel pressure by using a hand held gauge. Where can I tap into so I get an accurate reading?

Here is my setup...