i dont remember the numbers, but i looked the fuel pressure figres up in Alldata and you were right, those were high.

get a vacuum gauge and do this test: first, hook the gauge up to the manifold using one of the fittings on the manifold and see how much vacuum you pull at idle. then hook it up to the end of the vacuum line that hooks up to the fuel pressure regulator, and you should see the same vacuum, maybe just a tiny bit less. if you have little vacuum in that line, there is something plugging it, and you should find the restriction and remoive it. if you have normal vacuum in that line, your fuel pressure regulator is bad.