Fuel pressure dropping while driving and under acceleration to zero at idle runs 4 lb electric Blue

So new update. I hate to admit this but after all this trouble and all the good advice you guys give which I have taken. Turns out my 40 micron stainless steel filter is plugged which was the first thing I checked and it seemed clear and it seemed like it looked good but I never really blew through it until today. It was stopped up. So I installed a new filter and with the original blue fuel pump. All's right with the world. Thanks for all the help. So now I've got a Mallory 250 fuel pump with a new armature and bearings will be for sale lol