rough idle, engine dies, cutting out while driving

many possibility's! , plugged cat. maybe ,fuel filter 99% restricted, water in fuel ? all listed for starters !

I was told the FF was by the brake booster, silver w/2 lines into it. I do have a large filter on the shock tower but only 1 line in, 2nd line runs past and to Eng. disconnected fuel line on engine side of filter, turned ignition to on and by eye sight looked like strong flow. saved fuel and no signs of H2o so will check cat. in A.M. oxygen sens maybe?

fuel pressure also, not just volume, is important some as high as 60 lbs needed, ZX required pressure ? O2 sensor doubt ,but good to have fresh! guage hookup on fuel rail Schrader valve, threaded nipple!

I really appreciate the help! been so buried organizing rallies and racing for 2 diff. teams in 2 diff. natl. series I have totally ignored my poor car.